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COVID-19 Animation: What Happens If You Get Coronavirus?

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  • COVID-19 Animation: What Happens If You Get Coronavirus?

    7:28

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    This video 3D animation on COVID-19: What Happens If You Get Coronavirus is a collaboration between Nucleus Medical Media and our friends at the What If Channel. To watch super interesting hypothetical scenarios on the human body, humanity, the planet and the cosmos, please visit the What If Channel at
    #covid-19 #coronavirus #omicron

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  • Coronavirus outbreak explained through 3D Medical Animation

    6:09

    This video is available in different language subtitles English, Korean (
    Our dedicated microsite-
    The 2019 nCoV Novel Coronavirus is fast threatening to become a pandemic. This 3D medical animation explains the story so far, covering what is a pandemic, current rates of infection and tips to protect against infections. It also delves into the biology and mechanism of action MoA that coronavirus uses to infect and destroy human cells. Though the exact MoA for this coronavirus is not known.

    Check back daily for more information as it develops. Alternatively, see our website: , or our dedicated microsite above. The PDF in the video is available for free download also. It is provided under a Wiki CC4.0 creative commons license.

    For those of you leading government or private institutions or in the medical community , and if you think our visualizations can help in any way, please feel free to reach out.

    Also, any voice over artists, translators, that can offer to support our effort, please contact us on info@scientificanimations.com .

    Link to the 3D structure mentioned in the video:

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  • How Community Spread Happens Fast - Coronavirus Updated 4-7-2020

    3:07

    UPDATED VERSION 11/24/2020:

    Justin, a millennial, brings a box of donuts to the office and unknowingly spreads the coronavirus to his colleagues who further spread throughout the community. A motion graphic animation to show how healthy people are so crucial in curbing the spread and how community spread of Coronavirus (COVID-19) occurs - sometimes unknowingly by seemingly healthy people spreading the disease rapidly in socially dense environments.

  • 3D Animation: SARS-CoV-2 virus transmission leading to COVID-19

    1:32

    Thanks to the brilliant team at Helix Animation for this 3D animation outlining the most common ways of transmitting the coronavirus SARS=CoV-2 based on the latest relevant scientific research available (March 2020).

    Please note that the knowledge of this infectious disease and its transmission, as well as on this novel coronavirus, is still incomplete and evolving. Facts may change over time as the outbreak is ongoing with the latest updates found at:

    As typical for 3D visualizations, the overall virus representation is an artistic depiction, and the surface proteins density and distribution have been simplified, in order the entire audience to easily grasp the most prominent features of this virus.

    In light of the united global effort, we would like to provide free usage of this video and/or any of the imagery shown, as long as it is properly credited (including the logo and the full text in the lower left corner). Thus, if you’d like to use it, please drop us a line via our contact section at (Video/Imagery Usage) and we’ll get back to you with the video/imagery files.

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  • Coronavirus Animation: High Impact Demonstrates How COVID-19 Impacts the Body

    1:56


    Coronavirus, which causes COVID-19, originated in the city of Wuhan, China, and has since spread across the globe at an alarming rate. We produced this 3D coronavirus animation to show how COVID-19 is believed to be transmitted while educating the public on the symptoms that may be caused by COVID-19.

    Follow the World Health Organization for updates about the international spread of Coronavirus and how to protect yourself from COVID-19:


    Follow the U.S. Centers for Disease Control and Prevention to learn how the coronavirus outbreak is currently spreading across the United States, and recommendations for improving your safety and resilience.


    If you are currently leading government or private efforts to combat the coronavirus outbreak and you think our visualizations could help in your mission to educate the public or relevant stakeholders about this virus, we encourage you to visit our website, view some of our medical work, and reach out to learn how we can help.

  • Understanding the Virus that Causes COVID-19, Animation

    4:36

    Overview of coronavirus family, origin of SARS-CoV-2, viral structure and life cycle, pathophysiology. This video is available for instant download licensing here :
    ©Alila Medical Media. All rights reserved.
    Voice by: Ashley Fleming
    Support us on Patreon and get early access to our videos and FREE image downloads:
    All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
    Coronaviruses are a large family of enveloped, RNA viruses. There are 4 groups of coronaviruses: alpha and beta, originated from bats and rodents; and gamma and delta, originated from avian species. Coronaviruses are responsible for a wide range of diseases in many animals, including livestock and pets. In humans, they were thought to cause mild, self-limiting respiratory infections until 2002, when a beta-coronavirus crossed species barriers from bats to a mammalian host, before jumping to humans, causing the Severe Acute Respiratory Syndrome, SARS, epidemic. More recently, another beta-coronavirus is responsible for the serious Middle East Respiratory Syndrome, MERS, started in 2012. The novel coronavirus responsible for the Coronavirus Disease 2019 pandemic, COVID-19, is also a beta-coronavirus. The genome of the virus is fully sequenced and appears to be most similar to a strain in bats, suggesting that it also originated from bats. The virus is also very similar to the SARS-coronavirus and is therefore named SARS-coronavirus 2, SARS-CoV 2. At the moment, it’s not yet clear if the virus jumped directly from bats to humans, or if there is a mammalian intermediate host.
    Coronavirus genome is a large, single-stranded, positive-sense RNA molecule that contains all information necessary for the making of viral components. The RNA is coated with structural proteins, forming a complex known as nucleocapsid. The nucleocapsid is enclosed in an envelope, which is basically a LIPID membrane with embedded proteins. From the envelope, club-like spikes emanate, giving the appearance of a crown. This is where the “corona” name came from.
    The integrity of the envelope is essential for viral infection, and is the Achilles’ heel of the virus, because the lipid membrane can easily be destroyed by lipid solvents such as detergents, alcohol and some disinfectants. In fact, enveloped viruses are the easiest to inactivate when they are outside a host.
    In order to infect a host cell, the spikes of the virus must BIND to a molecule on the cell surface, called a receptor. The specificity of this binding explains why viruses are usually species specific – they have receptors in certain species, and not others. Host jumping is usually triggered by mutations in spike proteins which change them in a way that they now can bind to a receptor in a new species.
    The novel coronavirus appears to use the same receptor as SARS-coronavirus for entry to human cells, and that receptor is the angiotensin-converting enzyme 2, ACE2. Infection usually starts with cells of the respiratory mucosa, then spreads to epithelial cells of alveoli in the lungs.
    Receptor binding is followed by fusion of the viral membrane with host cell membrane, and the release of nucleocapsid into the cell. The virus then uses the host machinery to replicate, producing viral RNAs and proteins. These are then assembled into new viral particles, called virions, by budding into intracellular membranes. The new virions are released and the host cell dies.
    Uncontrolled growth of the virus destroys respiratory tissues, producing symptoms. Infection triggers the body’s inflammatory response, which brings immune cells to the site to fight the virus. While inflammation is an important defense mechanism, it may become excessive and cause damage to the body’s own tissues, contributing to the severity of the disease. In an otherwise healthy person, there is a good chance that the virus is eventually eliminated and the patient recovers, although some may require supportive treatments. On the other hand, people with weakened immune system or underlying chronic diseases may progress to severe pneumonia or acute respiratory distress syndrome, which can be fatal.

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  • How COVID-19 Affects the Body

    4:03

    Visit our website to learn more about using Nucleus content for patient engagement and content marketing:

    #Coronavirus #COVID-19 #Virus

    COVID-19 is the short name for the disease known as novel coronavirus disease 2019. Coronaviruses are a large group of similar viruses. Some are known to infect humans, such as SARS-CoV and MERS-CoV. The one that causes COVID-19 is called SARS-CoV-2. All coronaviruses are named for the crown-like “spikes” that cover their surface, called spike, or “S,” proteins. Inside the virus, genetic material, called RNA, is made up of genes. Genes carry the information to make more copies of the virus. The virus can infect you if it enters your mouth, nose, or lungs. Inside your body, the S protein of the virus locks to a receptor on the surface of one of your cells. This can trigger the virus to enter the cell in a couple of ways. It may cause the virus to fuse with the cell surface, then release its genes into the cell. Or, the cell may pull the virus inside by enclosing it in a sac. Once inside, the virus can fuse to the sac and release its genes. Next, the genes use a structure in your cell, called a ribosome, to make new copies of the virus. The new viruses travel to the surface of the cell. There, they can leave to infect more cells. In the meantime, viral S proteins left on the surface of the infected cell can cause it to fuse with nearby healthy cells, forming a giant cell. This may be another way for the virus to spread between cells. People may be infected with COVID-19 for two to fourteen days before symptoms appear. The three main symptoms of COVID-19 are: a fever, cough, and shortness of breath. Other symptoms may include: tiredness, body aches, stuffy nose, sore throat, diarrhea and vomiting, loss of appetite, and loss of smell. Most people have a mild illness and can recover at home. Some people who have the virus may not get sick at all or may show no symptoms. But, if you have trouble breathing, or any other symptoms that are severe, call your doctor or the emergency room. They will tell you what to do. For most people who have the virus, the risk for serious illness is thought to be low. People sixty-five years and older may have a higher risk for serious illness. And, people of any age may be at high-risk if they have underlying conditions, such as: chronic lung disease or asthma; serious heart conditions; diabetes; severe obesity; chronic kidney disease, and liver disease. High-risk groups also include people with a weakened immune system, including: those on certain medications, such as corticosteroids; people in cancer treatment; and those with HIV or AIDS. Even if you aren’t in a high-risk group, it’s important to practice social distancing, which means keeping at least two meters, or six feet, between you and other people. This helps prevent infections and serious illness in others as well as yourself. For up-to-date information about COVID-19 and other ways to prevent its spread, visit the CDC website.

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  • 3D Animation: How Do I Protect Myself From Coronavirus, COVID-19?

    1:34

    COVID-19 is a disease caused by a new coronavirus that was identified in China. It is thought to spread from person to person when people are close together, and through droplets produced when a sick person coughs or sneezes.

    #Coronavirus #COVID-19 #Pandemic

    Currently, there is no treatment for COVID-19. The best way to keep yourself from getting sick is to avoid being exposed to the virus. One way to protect yourself is to clean your hands often. Wash your hands often with soap and water for at least twenty seconds. If soap and water aren’t available, use a hand sanitizer. It should contain at least sixty percent alcohol. Avoid touching your face with unwashed hands. Another way to protect yourself is to avoid close contact with other people. This includes avoiding contact with sick people. And, put distance between yourself and others by staying home as much as possible. If you have to go out, aim to keep a minimum of six feet between yourself and others when possible. For more information, visit the website for the Centers for Disease Control.

    ANH20235

  • How the COVID-19 virus is transmitted

    1:39

    The COVID-19 virus spreads mainly between people in close contact with each other. It spreads most easily in crowded settings, closed spaces with poor ventilation or through prolonged contact with an infected person. Learn more on:

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  • How do Covid-19 vaccines work? Animation.

    2:57

    This animation explains briefly how Covid-19 vaccines work to protect you and why it is important to get vaccinated.

  • SARS-CoV-2 Infection Process

    2:21

    SARS-CoV-2 (Covid-19) Infection Process
    Video of scientific popularization. Animation.

    In this animation, a process in which a multitude of actors intervene (Enzymes, polysaccharides, cell organelles ...) is exposed, in a very simplified way.
    It is not a scientific video, but an outreach video that tries to explain, in the simplest possible way, a very complex process.
    I hope you like it.
    Guillermo Corrales Morales
    Music: Carlos Estella

  • Global COVID-19 Prevention

    2:30

    This short animated video from Stanford Medicine's Maya Adam illustrates how the novel coronavirus — the virus that causes the respiratory disease COVID-19 — is transmitted among people and how transmission can be prevented.

    Get the latest news on COVID-19 testing, treatment, and tracking data:

  • How Coronavirus Kills? Medical 3D Animation

    12:44

    How Coronavirus Kills? Biological & Medical 3D Animation (60FPS): With the help of 3D Animation, in this video, we will mainly learn What happens inside our body once Coronavirus enters or How Coronavirus Kills?

    Whether visible to us or not, but when a person coughs, he releases 3000 saliva droplets. And, when a person sneezes, 40,000 saliva droplets are released. The shocking part is that a single saliva droplet can contain as many as 20 Lakh Coronavirus Particles. And, when these droplets are released, they can easily go up to 1 meter with a speed of 300 Kilometers per hour.

    But before learning about How Coronavirus Kills, the most important part to learn is, can it float in the air? The first answer is Yes. Coronavirus can float in the air. But in a special case. If the virus or the droplet stays afloat on the dust particles. Then, it can easily enter the body of the person passing by via. inhaling the dust particles. But, Scientists have to date not found any proof that Coronavirus is floating from one person's body to another.

    As you know, our whole body is made up of cells. Obviously, Alveoli, Lungs, Bronchioles, Bronchi, Trachea, Stomach, Brain, etc. are all made up of cells. The cell which we're talking about is already shown in the video above. Our body contains a total of 37.2 trillion cells. Actually, these are the ones that help Coronavirus Kill and also which allows Coronavirus to kill a human.

    As per the latest Coronavirus Update, Vaccine might still take 6 months at least to come into existence. Needless to say, the Coronavirus Death toll is rising day by day. With the USA or the United States of America being the number 1 country to have a maximum number of Active Coronavirus Cases and Maximum Number of Death Tolls. Various portals have already released Coronavirus Maps. Indian Government has also tried it's level best to release a Mapping of Coronavirus with the help of the Arogyasetu App.

    In my upcoming or next videos, We might be able to learn, What is the science and Technology behind Ventilators. And, even when the mechanism of How Coronavirus Kills is already known to scientists, researchers are saying it might take more than a year for the world to release the Coronavirus Vaccine.

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    Track: The Day I Met You — Arvnd [Audio Library Release]
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  • Staying Safe When COVID-19 Strikes

    2:10

    What should you do if you experience symptoms of COVID-19? This short animated video from Stanford Medicine's Maya Adam illustrates practices for getting well and keeping others healthy.

    Get the latest news on COVID-19 testing, treatment, and tracking data:

  • COVID-19 Coronavirus Vaccine: How Does It Affect Your Body?

    5:42

    Employees of Hospitals, Schools, Universities and Libraries may download 8 FREE medical animations from Nucleus by signing up for a free trial:

    Biology students: Subscribe to the Nucleus Biology channel to see new animations on biology and other science topics, plus short quizzes to ace your next exam:

    This video is a collaboration between Nucleus Medical Media and our friends at the What If Channel. To watch interesting hypothetical scenarios on the human body, humanity, the planet and the cosmos, please visit the What If Channel at


    This video explains what happens in your body when you get the COVID-19 mRNA vaccine, including how the vaccine helps your immune system recognize and fight the COVID-19 virus, possible side effects from the vaccine, and how long before you are fully-vaccinated against the virus after receiving the vaccine.

    Hash tags: #CoronavirusVaccine #COVID19Vaccine #Coronavirus

  • How COVID-19 Affects Your Lungs

    2:20

    COVID-19 is a disease caused by a virus called SARS-CoV-2. The virus – and your immune system’s reaction to it, inflammation – can damage your lungs, causing them to scar and stiffen or fill with fluid.

    This video is by the National Heart, Lung, and Blood Institute (NHLBI), part of the National Institutes of Health (NIH).

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  • The Great Race: A COVID-19 Story

    1:17

    Wear a mask. Together we are stronger.

    Scientists are encouraging everyone to wear masks to control the spread of COVID-19. For additional info, Stanford Medicine experts discuss evidence that informed the World Health Organization’s recommendations and explain how you can help flatten the curve of COVID-19 infections:

    This video was created for Stanford Medicine by Maya Adam
    Animation: Matt Torode
    Special Thanks: Russ Haan, Jennifer Gates, Marsha Griffin, Ryan Matlow, Amy Price and Yvonne A. Maldonado

  • What is a coronavirus? - Elizabeth Cox

    5:16

    Dig into the science of coronaviruses and find out how they cause diseases such as SARS, MERS, and COVID-19.

    --

    For almost a decade, scientists chased the source of a deadly new virus through China’s tallest mountains and most isolated caverns. They finally found it in the bats of Shitou Cave. The virus in question was a coronavirus that caused an epidemic of severe acute respiratory syndrome, or SARS, in 2003. So what exactly is a coronavirus, and how does it spread? Elizabeth Cox explains.

    Lesson by Elizabeth Cox, directed by Anton Bogaty.

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    Thank you so much to our patrons for your support! Without you this video would not be possible! Boytsov Ilya, Steven Razey, Javier Aldavaz, Nathan Giusti, Mada Arslan, Joichiro Yamada, Ritul Raghavan, Aline de Paula Zillig, Yambu Ganesh Shaw, Abeer Rajbeen, John Hong, Minh Tran, Helen Lee, Anthony Benedict, Turine Tran, Mathew Samuel, Karthik Balsubramanian, Lee, Livia-Alexandra Sarban, Annastasshia Ames, João Henrique Rodrigues, Sebastiaan Hols, Aries SW, SANG HAN, Amy Lopez, ReuniteKorea, Vinh-Thuy Nguyen, Liz Candee, Clovis Norroy, Danielle Downs, Nik Maier, Angel Pantoja, Nishant Suneja, 张晓雨, Srinivasa C Pasumarthi, Kathryn Vacha, Anthony Arcis, Jeffrey Segrest, Sandra Fuller Bocko, Alex Pierce, Lawrence Teh Swee Kiang, BRENDAN NEALE, Jane White, Karmi Nguyen, John C. Vesey, Yelena Baykova, Harshita Jagdish Sahijwani, Won Jang, Nick Johnson and Tariq Keblaoui.

  • HOW DOES COVID-19 AFFECT THE BODY?

    5:15

    Coronaviruses (CoV) are a family of viruses that cause sicknesses like the common cold, as well as more severe diseases, such as Middle East Respiratory Syndrome and Severe Acute Respiratory Syndrome. A novel coronavirus (nCoV) is a new strain – one that hasn’t previously been recognized in humans.
    Coronaviruses cause diseases in mammals and birds. A zoonotic virus is one that is transmitted between animals and people. When a virus circulating in animal populations infects people, this is termed a “spillover event”.
    How does CoVID-19 affect the body? The virus is fitted with protein spikes sticking out of the envelope that forms the surface and houses a core of genetic material. Any virus that enters your body looks for cells with compatible receptors – ones that allow it to invade the cell. Once they find the right cell, they enter and use the cell’s replication machinery to create copies of themselves. It is likely that COVID-19 uses the same receptor as SARS – found in both lungs and small intestines.
    It is thought that CoVID-19 shares many similarities with SARS, which has three phases of attack: viral replication, hyper-reactivity of the immune system, and finally pulmonary destruction. Early on in infection, the coronavirus invades two types of cells in the lungs – mucus and cilia cells. Mucus keeps your lungs from drying out and protects them from pathogens. Cilia beat the mucus towards the exterior of your body, clearing debris – including viruses! – out of your lungs. Cilia cells were the preferred hosts of SARS-CoV, and are likely the preferred hosts of the new coronavirus. When these cells die, they slough off into your airways, filling them with debris and fluid. Symptoms include a fever, cough, and breathing difficulties. Many of those infected get pneumonia in both their lungs.
    Enter the immune system. Immune cells recognize the virus and flood into the lungs. The lung tissue becomes inflamed. During normal immune function, the inflammatory process is highly regulated and is confined to infected areas. However, sometimes the immune system overreacts, and this results in damage to healthy tissue. More cells die and slough off into the lungs, further clogging them and worsening the pneumonia.
    As damage to the lungs increases, stage three begins, potentially resulting in respiratory failure. Patients that reach this stage of infection can incur permanent lung damage or even die. We see the same lesions in the lungs of those infected by the novel coronavirus as those with SARS. SARS creates holes in the lungs, so they look honeycomb-like. This is probably due to the aforementioned over-reactive immune response, which affects tissue both infected and healthy and creates scars that stiffen the lungs. As such, some patients may require ventilators to aid breathing.
    The inflammation also results in more permeable alveoli. This is the location of the thin interface of gas exchange, where your lungs replace carbon dioxide in your blood with fresh oxygen you just inhaled. Increased permeability causes fluid to leak into the lungs. This decreases the lungs’ ability to oxygenate blood, and in severe cases, floods them so that you become unable to breathe. Sometimes, this can be fatal.
    The immune system’s over-reaction can also cause another kind of damage. Proteins called cytokines are the immune system’s alarm system, recruiting immune cells to the infection site. Over-production of cytokines can result in a cytokine storm, where there is large-scale inflammation in the body. Blood vessels become more permeable and fluid seeps out. This makes it difficult for blood and oxygen to reach the rest of the body and can result in multi-organ failure. This has happened in the most severe cases of CoVid-19. Although there are no specific treatments for coronaviruses, symptoms can be treated through supportive care. Also, vaccines are currently in development.
    What can you do to protect yourself from CoVid-19? Basic protocol comes down to regular hand washing, avoiding close contact with anyone coughing or sneezing, avoiding unnecessary contact with animals, washing hands after contact with animals, thoroughly cooking meat and eggs prior to consumption, and covering your mouth and nose while coughing or sneezing. Respiratory viruses are typically transmitted via droplets in sneezes or coughs of those infected, so preventing their travel stops the spread of disease.

    Alveoli model from:

  • COVID-19 mRNA Vaccine: Will It Change My DNA?

    4:01

    This video is brought to you by the SMART Imagebase at a website where subscribers can download thousands of medical images and videos created by Nucleus Medical Media, including this one. The SMART Imagebase website contains over 24,000 items on anatomy, physiology, embryology, surgery, trauma, pathology, diseases, conditions and other topics. Students, educators and professionals use them in lectures, courses, presentations, professional training and more. To request more information on how your school or business can subscribe, please visit

    #mRNAvaccine #COVID19Vaccine #COVID19

    mRNA Vaccines for COVID-19. Vaccines are substances that protect you from harmful diseases. Most vaccines contain parts of weakened or dead germs that trigger your immune system to fight the disease. But mRNA vaccines for COVID-19 are different. They contain a substance, called mRNA, that teaches your cells how to make a protein that triggers an immune response. In order to understand how these vaccines work, it’s important to know what mRNA is and how it normally makes proteins your body needs. Most cells in your body have a “command center” inside them, called the nucleus. It contains genetic material, called DNA, that consists of instructions for building and maintaining your body. Proteins are one of the building blocks of your body. When a new body protein needs to be built, instructions for building it are copied from your cell’s DNA and converted into a “message,” called messenger RNA, or mRNA. Then, the mRNA travels out of the nucleus to a protein-building machine in your cell, called a ribosome. As the ribosome “reads” the “message” from the mRNA, it builds the protein your body needs. mRNA vaccines take advantage of this process to help give you immunity to COVID-19. Each vaccine contains special mRNA that provides instructions for your cells to build a harmless piece of the virus, called the spike protein. The spike protein is found on the surface of the SARS-CoV-2 coronavirus that causes COVID-19. Each piece of the mRNA from the vaccine is wrapped in a protective coating. The vaccine is given as a shot in the upper arm. In the body, the mRNA particles enter your cells. Once inside the cell, the mRNA travels to a ribosome. Using the mRNA from the vaccine, the ribosome makes only a piece of the spike protein from the virus. After making the piece of the spike protein, your cell destroys the mRNA from the vaccine. It’s important to know that the mRNA from the vaccine never enters the cell’s nucleus or changes its DNA in any way. Next, your cell presents the piece of the spike protein on its surface. This allows your immune cells to detect the protein and recognize that it doesn’t belong there. As a result, your immune cells begin making antibodies as part of an immune response to the virus. In the future, if you catch the virus, the antibodies recognize and attach to the spike protein pieces on infected cells and the spike proteins on the virus. This marks them for immediate destruction by other immune cells. Like all vaccines, the benefit of these mRNA vaccines is that they give vaccinated people protection from the virus without having to get sick with COVID-19. Most mRNA vaccines for COVID-19 require you to get a second shot within a few weeks. Sometime after getting the vaccine, you may have symptoms, such as a fever. This is normal. It means the vaccine is working to make you immune to the virus. Vaccines protect you, your family, and your community from diseases that can be dangerous, or even deadly. For up to date information about vaccines for COVID-19 visit the Centers for Disease Control and Prevention website at CDC.gov.

    ANH21248

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  • How Corona Virus Affects Your Body? | COVID-19 | The Dr Binocs Show | Peekaboo Kidz

    9:09

    Pandemics Explained | How Pandemics Occur | Corona Virus Pandemic | Epidemics | Wuhan Coronavirus | What Is Pandemic | Influenza Pandemic | SARS | Small Pox | Corona Pandemics | World Health Organisation | WHO | Covid19 Pandamics | Flu | Spread Of Pandemics | Pandemics Information | Best Kids Show | Dr Binocs Show | Dr Binocs | Peekaboo Kidz

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    Hey kids, in this video, Dr Binocs will explain, Pandemics | What is Pandemics? | Coronavirus Pandemics | Spread Of Pandemics | Epidemics

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  • How vaccines work against COVID-19: Science, Simplified

    2:16

    After we have been exposed to an infection, our immune system remembers the threat, in particular by producing antibodies. These are proteins that circulate in the blood and throughout the body; they quickly recognize and disable the invader upon contact, thereby preventing or minimizing illness. This is why we usually do not get sick with the same bug twice; we are immune. Vaccines mimic this process, encouraging the immune system to make antibodies without us having to go through the illness.

    Some of the leading SARS-CoV-2 vaccine candidates are “mRNA vaccines,” based on incorporating the genetic blueprint for the key spike protein on the virus surface into a formula that when injected into humans instructs our own cells to make the spike protein. In turn, the body then makes antibodies against the spike protein and they protect us against viral infection.
    This strategy is faster than more traditional approaches, which often involve generating weakened or inactivated forms of a live virus or making large amounts of the spike protein to determine whether they can prompt an antibody response.

    Once a potential vaccine is discovered, a number of checkpoints exist before it can be administered to people. First are preclinical tests, which involve experiments in a laboratory and with animals. Scientists must ensure the vaccine candidate is not only effective, but also safe. For example, an antibody response to an imperfect vaccine could, under extremely rare circumstances, end up increasing the danger of becoming infected.
    When the potential vaccine achieves the necessary preclinical results, clinical trials can begin in a small group of people. As the vaccine candidate advances, it is tested on increasing numbers of people, with scientists and doctors closely monitoring safety, efficacy and dosing. Upon successful completion of clinical trials, the vaccine candidate must be reviewed and approved by regulatory agencies such as the FDA before large-scale manufacturing and distribution gets underway and the licensed vaccine is administered widely.

  • Recognizing Day to Day Signs and Symptoms of Coronavirus

    3:51

    DAY TO DAY SYMPTOMS OF COVID-19
    Before proceeding, please note that this general overview is compiled for initial self-assessment only and may vary for each individual. If you're not feeling well, you should immediately consult a medical practitioner to have an accurate diagnosis and proper treatment of COVID-19.
    The typical daily symptoms are concluded from the study of 138 patients at Zhongnan Hospital of Wuhan University and another study involving 135 patients from Jinyintan Hospital and 56 patients from Wuhan Pulmonary Hospital.
    These symptoms are broken down into:
    DAY 1 TO DAY 2
    The beginning symptoms are similar to the common cold with a mild sore throat and neither having a fever nor feeling tired. Patients can still consume food and drink as usual.
    DAY 3
    The patient's throats start to feel a bit painful. Body temperature reads at around 36.5° celsius. Although it's uncommon, other symptoms like mild nausea, vomiting or mild diarrhea are possible to set in.
    DAY 4
    Throat pain becomes more serious. Other symptoms like feeling weak and joint pain start to manifest. The patient may show a temperature reading between 36.5° to 37° celsius.
    DAY 5 TO 6
    Mild fever starts. The patients show a temperature reading above 37.2° celsius. The second most common symptom, dry cough, also appears. Dyspnea or breathing difficulty may occur occasionally. Most patients in this stage are easily feeling tired. Other symptoms remain about the same. These four symptoms are among the top five key indications of COVID-19 according to the final report of the initial outbreak conducted by the joint mission of China and WHO.
    DAY 7
    The patients that haven't started recovering by day 7 get more serious coughs and breathing difficulty. Fever can get higher up to 38° celsius. Patients may develop further headache and body pain or worsening diarrhea if there’s any. Many patients are admitted to the hospital at this stage.
    DAY 8 TO 9
    On the 8th day, the symptoms are likely to be worsened for the patient who has coexisting medical conditions. Severe shortness of breath becomes more frequent. Temperature reading goes well above 38°. In one of the studies, day 9 is the average time when Sepsis starts to affect 40% of the patients.
    DAY 10 TO 11
    Doctors are ordering imaging tests like chest x-ray to capture the severity of respiratory distress in patients. Patients are having loss of appetite and may be facing abdominal pain. The condition also needs immediate treatment in ICU.
    DAY 12 TO 14
    For the survivors, the symptoms can be well-managed at this point. Fever tends to get better and breathing difficulties may start to cease on day 13. But Some patients may still be affected by mild cough even after hospital discharge.
    DAY 15 TO 16
    Day 15 is the opposite condition for the rest of the minority patients . The fragile group must prepare for the possibility of acute cardiac injury or kidney injury.
    DAY 17 TO 19
    COVID-19 fatality cases happen at around day 18. Before the time, vulnerable patients may develop a secondary infection caused by a new pathogen in the lower respiratory tract. The severe condition may then lead to a blood coagulation and ischemia.
    DAY 20 TO 22
    The surviving patients are recovered completely from the disease and are discharged from the hospital.

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  • End the pandemic. Vaccines work.

    1:20

    Each of us has an important role to play in ending the COVID-19 pandemic. Get the COVID-19 vaccine as soon as you are eligible and able to do so. Once you are vaccinated, help stop the spread of infection to others by washing your hands, keeping your distance, and following local mask guidelines.

    Written and directed by Maya Adam MD, Faculty Lead for the Global Child Health Media Initiative. Special thanks: Matt Torode (animation), Brandon Liew (sound design), Stuart Forrest, Russ Haan, Till Bärnighausen, Shannon McMahon, Bonnie Maldonado, Simiao Chen, Sebastian Forster, Ann Doerr, and Jennifer Gates.

    Recommendations regarding mask-wearing vary by country. For these reasons, some of our main characters are not shown wearing masks for the entirety of this film. Please follow the guidance of your local public health agencies with regard to mask-wearing for children and adults.

    To learn more about the COVID-19 vaccine:
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  • RNA Vaccines - Basis of Pfizer and Moderna COVID-19 vaccines, Animation

    3:19

    The basis of upcoming Pfizer and Moderna coronavirus vaccines. How it works? Pluses and minuses. For comparison of different vaccines, as well as events of immune response, role of different immune cells (T-cells, B-cells, APC), see this video:
    This video is available for instant download licensing here:
    ©Alila Medical Media. All rights reserved.
    Support us on Patreon and get early access to videos and free image downloads: patreon.com/AlilaMedicalMedia
    All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
    Vaccines prepare the immune system, getting it ready to fight disease-causing organisms, called pathogens. A vaccine is introduced to the body to mimic infection, triggering the body to produce antibodies against the pathogen, but without causing the illness. Conventional vaccines usually contain a weakened or inactivated pathogen; or a piece of a protein produced by the pathogen, called an antigen.
    RNA vaccines are a new generation of vaccines. Instead of the antigen itself, RNA vaccines contain a messenger RNA – mRNA - that encodes for the antigen. Once inside the body’s cells, the mRNA is translated into protein, the antigen, by the same process the cells use to make their own proteins. The antigen is then displayed on the cell surface where it is recognized by the immune system. From here, the sequence of events is similar to that of a conventional vaccine.
    Some RNA vaccines also contain additional mRNA coding for an enzyme, which, after being translated in host cells, can generate multiple copies of the antigen-encoding mRNA. This essentially amplifies the production of antigen from a small amount of vaccine, making the vaccine more effective. These are called self-amplifying RNA vaccines.
    RNA vaccines are easier and safer to produce than conventional vaccines. This is because mRNA molecules can be synthesized in a cell-free system using a DNA template with a sequence of the pathogen; while conventional vaccines usually require a more complicated and risk-prone process of growing large amounts of infectious pathogens in chicken eggs or other mammalian cells. Without the risks of being contaminated by infectious elements or allergens from egg cultures, RNA vaccines are also safer for patients.
    Because protein synthesis occurs in the cytoplasm, RNA molecules do not need to enter the nucleus, so the possibility of them integrating into the host cell genome is low. RNA strands are usually degraded by cellular enzymes once the protein is made.
    The relative simplicity of the production process makes it easier to standardize and scale, enabling rapid responses to emerging pandemics. Other advantages include lower production costs, and the ease of tweaking RNA sequences to adapt to rapidly-mutating pathogens.
    On the minus side, it can be challenging to deliver mRNA effectively to the cells, since RNA sequences and secondary structures may be recognized and destroyed by the innate immune system as soon as they are administered intravenously. These limitations can be overcome by optimizing codons, using modified nucleosides to avoid recognition, and packaging RNA into protective nanoparticles.
    Another disadvantage is that most RNA vaccines require uninterrupted refrigeration for transportation and storage, which can be a hurdle for vaccine distribution. Research is ongoing to engineer thermostable vaccines.

  • How Contagious is COVID-19?

    3:31

    Transmission of SARS-CoV-2 occurs via droplet transmission, contact transmission, and aerosol transmission. Droplet transmission occurs when respiratory droplets produced when an infected person coughs or sneezes are inhaled by a person nearby. Contact transmission occurs when a person touches a contaminated surface and then their mouth, nose, or eyes. Aerosol transmission occurs when respiratory droplets containing the virus mix into the air and then are inhaled. COVID-19 is stable for up to 24 hours on cardboard, 2-3 days on plastic and stainless steel and up to three hours in aerosols, which include fog, mist, dust, air pollutants, and smoke. Therefore, it is possible to get infected by touching contaminated objects or through the air.
    The incubation period is the time between infection and symptom onset for an illness. Estimates for COVID-19’s incubation period vary from 2-14 days, but it is generally assumed to be around 5 days. There is more debate about the latent period, which is the time between infection and infectiousness. It is now thought that people can be infectious before showing symptoms, and so the latent period is shorter than the incubation period.
    An imported case occurs when a traveler is infected in one area and is reported as sick in another area. Local transmission occurs if that traveler infects others, or if there is a cluster of cases locally and the spread is easily traced. Community transmission occurs when there is no clear source of infection.
    Infectivity can be measured using R0. R0 is important epidemiology jargon, short for reproduction number. It is the number of cases, on average, that an infected person will cause during their infectious period. So if R0 =2, then an infected person will infect an average of 2 other people while they are infectious. There are two important variants of the R0. The basic reproduction number represents the maximum potential of a pathogen to infect people – basically what would happen if an infectious person entered a community with no prior immunity. The effective reproductive number describes the current vulnerability of a population based on whether people have immunity thanks to vaccination or prior exposure. The effective R0 decreases over the course of the outbreak. Note that both basic and effective reproduction number depend on factors such as environment and demographics in addition to the pathogen’s infectiousness. The goal of public health interventions is to bring R0 down to less than 1, as this would cause the disease to die out over time.
    The seasonal flu has an R0 ranging from 0.9 – 2.1. There is a lot of debate about the R0 of COVID-19, with estimates from more recent data ranging from 2.7-4.2. The variance in these estimates is largely due to differing model assumptions and a lack of data. For example, models which assume the possibility of being infectious before symptom onset have estimates that are around 0.5 higher.
    These high R0 estimates mean there is much greater potential for spread of COVID-19 than for the flu. How much greater? For the purpose of this example, let’s say that the flu has an R0 of 1.5 and COVID-19 has an R0 of 3. After three cycles of infection, 11 people have had the flu, and 40 people have been infected with COVID-19. After ten cycles of infection, this becomes 171 people with the flu, and over 88,000 people with COVID-19.

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  • How omicron broke through coronavirus vaccines

    3:30

    The highly transmissible omicron variant of the coronavirus has taken over as the dominant strain in the United States, resulting in breakthrough infections among the vaccinated.

    Omicron has sparked alarm both internationally and in the United States, where it accounted for more than 98 percent of new infections during the week ending Jan. 8, according to the most recent data from the Centers for Disease Control and Prevention.

    The variant has an unusually high number of mutations that make it significantly more contagious and capable of eluding the body’s first line of immune defenses. Read more: Subscribe to The Washington Post on YouTube:

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  • All Types of COVID-19 Vaccines, How They Work, Animation.

    5:56

    How it works. mRNA vaccine (Pfizer, Moderna), DNA & Viral vector vaccines (Johnson & Johnson (J&J, JNJ), Oxford-AstraZeneca, Inovio, Sputnik V); protein/peptide vaccine (Novavax, EpiVacCorona), conventional inactivated (CoronaVac of Sinovac, Covaxin, Sinopharm). Mechanism of each type of coronavirus vaccines explained. Vaccine-induced immune response as compared to natural immunity.
    This video is available for instant download licensing here:
    ©Alila Medical Media. All rights reserved.
    Support us on Patreon and get early access to videos and free image downloads: patreon.com/AlilaMedicalMedia
    During a natural viral infection, infected cells alert the immune system by displaying pieces of viral proteins on their surface. They are said to present the viral antigen to immune cells - cytotoxic T-cells, and activate them.
    Debris of dead cells and viral particles are picked up by professional antigen-presenting cells, (dendritic cells...). Dendritic cells patrol body tissues, sampling their environment for intruders. After capturing the antigen, dendritic cells leave the tissue for the nearest lymph node, where they present the antigen to another group of immune cells - helper T-cells. Viral particles also activate B-cells.
    These cells mount 2 types of immunity specific to the viral antigen: cell-mediated immunity and antibody-mediated immunity.
    Vaccines deliver viral antigens to trigger immune responses without causing the disease. The events of a vaccine-induced immune response are similar to that induced by a natural infection, although some types of vaccines may induce only antibody-mediated immunity (B cell immunity, not T cell (cellular) immunity).
    Many existing vaccines contain a weakened or an inactivated virus. Because the whole virus is used, these vaccines require extensive safety testing. Live attenuated vaccines may still cause disease in people with compromised immune systems. Inactivated vaccines (Sinovac/China, Covaxin/India) only induce humoral (B cell) immunity.
    Subunit vaccines contain only part of the virus, usually a spike protein (peptide - EpiVacCorona/Russia). These vaccines may not be seen as a threat to the immune system, and therefore may not elicit the desired immune response. For this reason, certain substances, called adjuvants, are usually added to stimulate the antigen-presenting cells to pick up the vaccine.
    Nucleic acid vaccines contain genetic information for making the viral antigen, instead of the antigen itself. Naked DNA vaccines (Inovio, phase 2/3 clinical trials) require a special delivery method to reach the cell’s nucleus (electroporation). Alternatively, a harmless, unrelated virus may be used as a vehicle to deliver the DNA. In this case, the vaccine is also known as viral-vector vaccine (Sputnik V/Russia, Oxford-AstraZeneca, Johnson & Johnson's). For example, the Oxford-AstraZeneca Covid-19 vaccine uses a chimpanzee adenovirus as a vector. The adenoviral genome is modified to remove viral genes, and the coronavirus spike gene is added. This way, the viral vector cannot replicate or cause disease, but it acts as a vehicle to deliver the DNA. Why a non-human adenovirus is used?
    Do DNA vaccines change human DNA?
    mRNA vaccines (Pfizer, Moderna) are delivered within a lipid covering that will fuse with the cell membrane. The mRNA is translated into viral antigen, which is then displayed on the cell surface. mRNA vaccines are extremely unlikely to integrate into human genome.
    All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.

  • OMICRON Variant | How dangerous is the new variant of Covid

    8:23

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    OMICRON Variant | How dangerous is the new variant of Covid

    On 26 November 2021, WHO designated the variant B.1.1.529 a variant of concern, named Omicron, on the advice of WHO’s Technical Advisory Group on Virus Evolution (TAG-VE). This decision was based on the evidence presented to the TAG-VE that Omicron has several mutations that may have an impact on how it behaves, for example, on how easily it spreads or the severity of illness it causes. Here is a summary of what is currently known.



    Current knowledge about Omicron

    Researchers in South Africa and around the world are conducting studies to better understand many aspects of Omicron and will continue to share the findings of these studies as they become available.

    Transmissibility: It is not yet clear whether Omicron is more transmissible (e.g., more easily spread from person to person) compared to other variants, including Delta. The number of people testing positive has risen in areas of South Africa affected by this variant, but epidemiologic studies are underway to understand if it is because of Omicron or other factors.

    Severity of disease: It is not yet clear whether infection with Omicron causes more severe disease compared to infections with other variants, including Delta. Preliminary data suggests that there are increasing rates of hospitalization in South Africa, but this may be due to increasing overall numbers of people becoming infected, rather than a result of specific infection with Omicron. There is currently no information to suggest that symptoms associated with Omicron are different from those from other variants. Initial reported infections were among university students—younger individuals who tend to have more mild disease—but understanding the level of severity of the Omicron variant will take days to several weeks. All variants of COVID-19, including the Delta variant that is dominant worldwide, can cause severe disease or death, in particular for the most vulnerable people, and thus prevention is always key.



    Effectiveness of prior SARS-CoV-2 infection

    Preliminary evidence suggests there may be an increased risk of reinfection with Omicron (ie, people who have previously had COVID-19 could become reinfected more easily with Omicron), as compared to other variants of concern, but information is limited. More information on this will become available in the coming days and weeks.

    Effectiveness of vaccines: WHO is working with technical partners to understand the potential impact of this variant on our existing countermeasures, including vaccines. Vaccines remain critical to reducing severe disease and death, including against the dominant circulating variant, Delta. Current vaccines remain effective against severe disease and death.

    Effectiveness of current tests: The widely used PCR tests continue to detect infection, including infection with Omicron, as we have seen with other variants as well. Studies are ongoing to determine whether there is any impact on other types of tests, including rapid antigen detection tests.

    Effectiveness of current treatments: Corticosteroids and IL6 Receptor Blockers will still be effective for managing patients with severe COVID-19. Other treatments will be assessed to see if they are still as effective given the changes to parts of the virus in the Omicron variant.

    Studies underway

    At the present time, WHO is coordinating with a large number of researchers around the world to better understand Omicron. Studies currently underway or underway shortly include assessments of transmissibility, severity of infection (including symptoms), performance of vaccines and diagnostic tests, and effectiveness of treatments.

    WHO encourages countries to contribute the collection and sharing of hospitalized patient data through the WHO COVID-19 Clinical Data Platform to rapidly describe clinical characteristics and patient outcomes.

    More information will emerge in the coming days and weeks. WHO’s TAG-VE will continue to monitor and evaluate the data as it becomes available and assess how mutations in Omicron alter the behaviour of the virus.

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  • New COVID-19 infections drop 46% in New York

    3:41

    Epidemiologist Dr. John Brownstein told ABC News that sampling wastewater can detect variants of COVID-19 in huge populations. Although new cases are dropping, the death rate remains high.

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  • About Your Heart Attack | Nucleus Health

    4:05

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    #HeartAttack #MyocardialInfarction #Cardiomyopathy

    A heart attack is a condition caused by a blockage of blood flow to your heart muscle. The different ways the blood flow may become blocked in the arteries that supply blood to your heart muscle, and the treatments for a heart attack, are explained.

    ANH16180

  • How Dangerous Is Omicron Virus? | Omicron Variant | The Dr Binocs Show | Peekaboo Kidz

    6:20

    How Dangerous Is Omicron | Omicron Variant | Corona Virus Variant | Omicron Mutant | Covid-19 | Covid-19 New Variant Explained | Omicron Variant Explained | Coronavirus In India | World Health Organisation | Wuhan Virus | For Kids | Science Videos | Best Kids Show | Dr Binocs Show | Peekaboo Kidz

    Hey kids, in this video, Dr Binocs will explain How Dangerous Is Omicron? | The Dr Binocs Show | Peekaboo Kidz

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  • Understand COVID-19: Novel Coronavirus Mutations and Variants

    4:41

    Learn more about the Yale School of Medicine's response to COVID-19, visit:

    Since the beginning of the COVID-19 pandemic, scientists knew it was a matter of time before new variants of the novel coronavirus, SARS-Cov-2, began to emerge in our communities. For a virus that mutates relatively slowly – picking up an average of two to three new mutations a month – how quickly these distinct variants took root would depend on how well we stopped the spread of the virus. Viruses rely on our cellular equipment to reproduce; mutations can only continue if it keeps infecting people. This particular virus gains access to our cells using its “corona” – a layer of protein spikes that fit into our cellular receptors like a lock and key. But, says Akiko Iwasaki, PhD, “When viruses enter the host cells and replicate and make copies of their genomes, they inevitably introduce some errors into the code.” SARS-Cov-2 is an RNA virus. Unlike many other RNA viruses, though, the novel coronavirus has some ability to check for transcription errors as it replicates. Iwasaki, who studies the mechanisms of immune defense against viruses, compares these errors to a faulty spell-checker. Some of these random errors that get passed on are either neutral or detrimental to the virus. But some errors are beneficial to the virus – making it more contagious, for example – and allow it to proliferate and spread to more people. Over time, the cumulative effects of these mutations may be enough to change how the virus behaves. These “better fit” versions of the virus become the “building blocks of selection,” says Nathan Grubaugh, PhD. These constellations of viral mutations – known as variants – may take hold if there is evolutionary pressure for them to do so. But the novel coronavirus is highly contagious and has spread almost unchecked throughout the world for the last year. It remains a bit of a mystery as to why these variants are emerging now – and what it will mean long-term for vaccination programs. Currently, scientists are optimistic that the three main vaccines available in the US – Pfizer, Moderna and Johnson & Johnson – will continue to provide good immunity. “There are certain mutations in some of these variants that seem to decrease the effectiveness of really important antibodies,” says Grubaugh. “But luckily with vaccines, you don’t just create one antibody, or two or three, you create many different antibodies that recognize all different parts of the virus.” “The mRNA technology is very flexible and can accommodate new mutations,” says Iwasaki. And even if the effectiveness of vaccines dropped to, say, 75 or 85 percent, that would still provide important protection and prevent severe cases of the disease that bring people to the emergency room. Questions about the vaccine remain, however, like whether a fully-vaccinated person could still transmit the virus to another person without being sick themselves. That’s why Iwasaki says it’s still important to continue wearing masks, avoid crowds, and practice good hygiene.

    “We have all the tools needed to stop the transmission and the spread of these new variants,” Grubaugh emphasized. “If we all put a lot of effort into doing our part, these variants won’t be able to take a foothold in our community at all.”

  • Vaccines and the Immune Response: How Vaccines Work

    3:37

    Vaccines and the Immune Response: How Vaccines Work
    This animation provides an overview of vaccines and the immune response, and how influenza vaccines work. Influenza vaccines are able to trigger an immune response by mimicking viral infection. They are usually manufactured using inactivated or killed virus particles taken from various circulating influenza strains.

  • COVID-19 vaccine: Bringing us together

    4:01

    The COVID-19 vaccines are safe and effective. When it’s your turn, we encourage you to get vaccinated as soon as possible. Remember that it is essential for everyone, including those who have been vaccinated, to help stop the spread of infection by washing hands, keeping your distance, and following local mask guidelines.

    Written and directed by Maya Adam MD, Faculty Lead for the Global Child Health Media Initiative. Animations by Matt Torode. Special Contributions: Jennifer Gates, Marsha Griffin, Kelly Moore, Yvonne A. Maldonado, Amy Pisani, Till Bärnighausen, Arvind Singhal and Ann Doerr.

    Note from Stanford Medicine as of March 3, 2021: Recommendations regarding mask-wearing vary by country. For these reasons, our main characters are not shown wearing masks for the entirety of this film. Please follow the guidance of your local public health agencies with regard to mask-wearing for children and adults.

    To learn more about the COVID-19 vaccine:
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  • COVID-19 Animation What Happen If You Get Coronavirus|Chathu Learning |covid19- red alert Sri Lanka|

    2:51

    #corvid19#coronavirus#chathu
    COVID 19 What Happens If You Get Coronavirus?|Chathu Learning Academy How Corona Virus Affects Your
    Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.
    Most people who fall sick with COVID-19 will experience mild to moderate symptoms and recover without special treatment.
    HOW IT SPREADS
    The virus that causes COVID-19 is mainly transmitted through droplets generated when an infected person coughs, sneezes, or exhales. These droplets are too heavy to hang in the air, and quickly fall on floors or surfaces.
    You can be infected by breathing in the virus if you are within close proximity of someone who has COVID-19, or by touching a contaminated surface and then your eyes, nose or mouth.

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  • What is a Vaccine?

    7:24

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    #immunization #vaccines #viruses


    Immunization is the process of becoming immune to or protected against a disease usually by receiving a vaccine. Vaccines stimulate your immune system to protect you from certain diseases so you won't get sick or get an infection. Normally, the organs and cells of your immune system defend your body from harmful germs, such as bacteria and viruses. Immune cells are constantly circulating through your body. They monitor certain substances on the surfaces of cells called antigens. Healthy cells have different antigens than diseased body cells or foreign invaders in the body. Immune cells usually ignore the antigens on healthy cells. But when immune cells come across antigens on germs, they destroy the germ. Afterward, the immune cell displays the germ's antigen on its surface. This activates other types of immune cells to help get rid of the infection. For example, some activated immune cells recognize the antigen on infected body cells and then destroy them. Other activated immune cells, called plasma cells, make molecules called antibodies. These antibodies travel through your body and lock on only to germs that have its specific antigen. This marks the germ for destruction. Then other immune cells attack the germs that have these antibodies. Once the infection is gone, some of the immune cells that were exposed to the antigen become memory immune cells. In the future, if the same type of germ infects your body again, the memory immune cells will be ready to destroy it so you don't get sick. This is called natural immunity. In many cases, it will last your whole lifetime. The problem with getting natural immunity from having the disease itself is that some naturally acquired infections can cause serious complications or may even be deadly. For example, polio can result in permanent paralysis or death. Measles can cause swelling of the brain resulting in permanent brain damage or death, especially in children under age 5. And whooping cough also known as pertussis can cause complications such as pneumonia, slowed or stopped breathing, and death, especially in babies under 1 year of age. While symptoms may not be severe in all people, it's not possible to know who will be affected enough to become very ill or even die. Vaccines can protect you from getting these diseases and their harmful symptoms. Vaccines often contain a small amount of weakened or killed germs, but some contain genetic material such as RNA or DNA that provide instructions for your body's own cells to make the germ's antigen. Usually, you receive a vaccine as a shot. Inside your body, the germ particles in the vaccine teach your immune cells to attack these germs. This process doesn't make you sick, but it does cause your body to make memory cells and antibodies for those germs. As a result, if that germ infects your body later in life, your immune system is ready to fight the infection so that you don't get sick. The main types of vaccines include: live attenuated vaccines, inactivated vaccines, toxoid vaccines, subunit and conjugate vaccines, mRNA vaccines, and viral vector vaccines. Live attenuated vaccines use alive but weakened germs. They're most like a natural infection and provide a strong disease immunity, examples are the measles, mumps, rubella, chicken pox, and flu nasal spray vaccines. Inactivated vaccines use inactive or killed germs. You may need several doses or booster shots over time. Examples are the hepatitis A, flu, polio, and rabies vaccines. Toxoid vaccines protect against harmful substances made by germs called toxins. They use weakened versions of the toxins called toxoids. You may need booster shots to maintain protection against diseases.

    ANH20241

  • COVID-19 ANIMATION | What Happens If You Get Coronavirus| Mr Science in 4K

    5:32

    Coronaviruses (CoVs) are a highly diverse family of viruses, that usually cause mild to moderate upper-respiratory tract illnesses, like the common cold. They are generally broken down into four subtypes: Alpha, beta, gamma and delta coronaviruses, with the latter two only occurring in animals. Three new coronaviruses have emerged from animal reservoirs over the past two decades to cause serious and widespread illness and death.
    These are:
    1)Severe acute respiratory syndrome (SARS-CoV) 2002
    2)Middle East respiratory syndrome (MERS-CoV) 2012
    3)And recently SARS-CoV-2 known commonly as coronavirus disease 2019 (COVID-19.

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  • Covid - 19 Animation : What happens if you get Coronavirus?

    5:26

    In this video, The Saviour Academy better known for it's E-Learning Modules have put in efforts to spread awareness about the disease.

    The video gives us all the necessary information about the deadly COVID-19 outbreak throughout the world, nature of the disease, its main symptoms, precautionary measures & reasons for it's prolonged illness found in the humans & animals.

    Stay Home! Stay Safe!

    Please visit us:

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    Share & Subscribe: If you like the video, don't forget to leave your comments & subscribe!!!

  • AED Plus - CPR COVID-19 Animation

    29

  • Powerheart G5 - CPR COVID-19 Animation - English

    29

  • Animation: Why is COVID-19 vaccine so important?

    3:30

    For more:


    COVID-19 is still ravaging the world. As winter comes, the rate of infection is rising. But the world is exhausted with months of compulsory mask wearing, social distancing, curfews and lockdowns. A vaccine is now the most powerful way to curb the disease.

    Subscribe to us on YouTube:
    Download our APP on Apple Store (iOS):
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  • Understanding COVID-19 Animation: Multiplication, Spread, Symptoms and Prevention

    11:41

    This COVID-19 animation is also available in Zulu: and Spanish:
    00:00 - Introduction
    00:20 - COVID-19 Replication: How coronavirus enters our body and multiplies
    01:50 - How COVID-19 spreads
    03:16 - The immune system's fight against COVID-19
    04:16 - How vaccines work
    04:53 - Symptoms of COVID-19
    06:38 - How to prevent spread of COVID-19
    Special thanks to Thuthuka Xulu (Occupational Health Nurse, South Africa), Marc G. Gutierrez (Student, University of Michigan Medical School), and Kevin S. Gregg, M.D. (Associate Professor of Internal Medicine and Infectious Diseases, University of Michigan).

  • COVID-19 animation video for children

    2:29

    UNICEF with support from UK Aid is influencing children in Malawi to practice 5 key actions to prevent COVID-19: frequent handwashing with soap, physical distancing, use of elbow when coughing and sneezing, avoiding touching the face and staying at home.

  • Three factors help you make safer choices during COVID-19

    1:00

    Check out this animation and see how location, proximity and time can help you make safer choices when you're in an area of widespread COVID-19 transmission. For more information, go to:

  • Tips To Fight Coronavirus | #COVID19 Animation Safety Video | How To Protect Yourself From Corona?

    1:04




    Tips To Fight Coronavirus | #COVID19 Animation Safety Video

    Edzooly strives to spread informative, engaging and fun facts and information through entertaining format. We try to analyze issues and news and present it via explainer videos. We'd be covering topics related to technology, health, science, finance , fun facts, entertainment, history and many more. Subscribe us for new instalment every week

  • Cytokine Storm in COVID-19

    7:29

    Understanding what drives severe tissue damage during COVID-19 infection will better help us understand how we can fight the disease. In this video, we’ll discuss what is known so far about cytokine storm syndrome associated with SARS-CoV-2 infection, including what cytokines are involved and what may be driving their production.

    *Note: In the video, we mention a decrease in production of IFN-α by T cells. This has been corrected in the transcripts to say IFN-γ.

  • Animation: Der virale Eintritt von SARS-CoV-2 in menschliche Wirtszellen.

    1:55

    Wie dringt das Coronavirus in menschliche Zellen ein, um dort sein Erbgut von der Wirtszelle vervielfältigen zu lassen? Was wissen wir über den Mechanismus? Diese Animation von Janet Iwasa in Zusammenarbeit mit der Coronavirus Structural Task Force gibt einen Einblick in dieses interessante und komplexe Thema.

    Du willst mehr darüber erfahren? (Englisch)


    Du hast wissenschaftliche Anmerkungen, die uns helfen können, die Animation zu verbesern?


    ------------------------------------------------------------------------------------------------------------------------------------------------
    Animation vom Iwasa-Lab, Universität Utah:

    In Zusammenarbeit mit der Coronavirus Structural Task Force:

    Deutsche Synchronisierung von Luise Kandler:

    Hintergrundmusik: Meditative Space by MaxKoMusic:


    Wenn du diese Animation für Forschungs- oder Bildungszwecke nutzen willst, kontaktiere uns gerne:
    insidecorona@uni-hamburg.de

    Diese Animation wurde gefördert von :
    Bundesministerium für Bildung und Forschung [Förderkennzeichen 05K19WWA]:

    National Science Foundation:

  • What Happens When You Have Coronavirus

    1:11

    Know the signs and symptoms of coronavirus and what happens inside the body if you are infected with COVID-19.

    For more information related to Coronavirus please visit:

    Northwell Health is New York state’s largest healthcare provider, with 23 hospitals, 650 outpatient facilities and nearly 15,000 affiliated physicians. We’re here to set the standard of care for our communities—and make the 2 million-plus patients we treat every year not only healthier, but happier. With over 66,000 employees, we have the brainpower to dream up new possibilities, and the manpower to make them a reality. Visit

    Subscribe to Northwell Health’s YouTube or head to our channel

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  • COVID-19 Animation: What happens when you get COVID-19?

    3:01

    What happens when you get infected with Coronavirus? And, if you do get infected how does one deal with it? Watch to know!
    #coronavirus #SagisagTV

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