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    • Vaccine Rollout as of Apr 01:

      Total Distributed: 4,989,325. Total Administered: 4,140,842.

      CDC Vaccine Data Tracker


      Visit your state's vaccine dashboard to learn more about their distribution guidelines. The CDC also has updated information on COVID-19 vaccines, including recommendations processes, differences about the different types, their benefits, safety data, and frequently asked questions.

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  3. Understanding How COVID-19 Vaccines Work | CDC › coronavirus › 2019-ncov

    Mar 09, 2021 · COVID-19 vaccines help our bodies develop immunity to the virus that causes COVID-19 without us having to get the illness. Different types of vaccines work in different ways to offer protection. But with all types of vaccines, the body is left with a supply of “memory” T-lymphocytes as well as B-lymphocytes that will remember how to fight that virus in the future.

  4. How COVID-19 vaccine works, potential side effects ... › coronavirus › covid-19-vaccine

    Apr 13, 2021 · The vaccine includes a fragment of the mRNA that encodes for a certain portion of the coronavirus' spike protein. When the vaccine is given to us, our cells make that protein – a fragment of it – and then our bodies build an immune response to the protein.

  5. How do different types of COVID-19 vaccines work? - Mayo Clinic › diseases-conditions › corona

    Mar 27, 2021 · A coronavirus disease 2019 (COVID-19) vaccine can help you develop immunity to SARS-CoV-2, the virus that causes COVID-19, without getting ill. But how exactly do the different types of COVID-19 vaccines work? Vaccines prompt an immune response so that your body remembers how to fight a virus in the future.

  6. How COVID-19 vaccines work: Answers for you › health-news › newsroom

    Jan 26, 2021 · The Pfizer and Moderna vaccines use mRNA, which stands for messenger ribonucleic acid. The mRNA, which is natural in our bodies, carries instructions to your cells. This mRA tells your body to make the spike protein that’s on the coronavirus. Then your immune system recognizes the protein as foreign and develops antibodies to neutralize it.

  7. How do the new COVID-19 vaccines work? - Scope › 2020/12/22 › how-do-the-new

    Dec 22, 2020 · The Pfizer and Moderna COVID-19 vaccines are the first to use the RNA coding molecule to prompt our bodies to fight the virus. Here's how they work. What seemed impossible an eyeblink ago is now a reality. Amazingly, not one but two COVID-19 vaccines -- from Pfizer and Moderna, respectively -- are spilling out of the chute within days of each other.

  8. Get the facts about COVID-19 vaccines - Mayo Clinic › diseases-conditions

    The Moderna COVID-19 vaccine is 94% effective in preventing the COVID-19 virus with symptoms. This vaccine is for people age 18 and older. It requires two injections given 28 days apart. The second dose can be given up to six weeks after the first dose, if needed.

  9. Understanding mRNA COVID-19 Vaccines | CDC › coronavirus › 2019-ncov

    Mar 04, 2021 · COVID-19 mRNA vaccines give instructions for our cells to make a harmless piece of what is called the “spike protein.” The spike protein is found on the surface of the virus that causes COVID-19. First, COVID-19 mRNA vaccines are given in the upper arm muscle. Once the instructions (mRNA) are inside the immune cells, the cells use them to make the protein piece.

  10. How Moderna’s Covid-19 Vaccine Works - The New York Times › moderna-covid-19-vaccine
    • A Piece of the Coronavirus. The SARS-CoV-2 virus is studded with proteins that it uses to enter human cells. These so-called spike proteins make a tempting target for potential vaccines and treatments.
    • mRNA Inside an Oily Shell. The vaccine uses messenger RNA, genetic material that our cells read to make proteins. The molecule — called mRNA for short — is fragile and would be chopped to pieces by our natural enzymes if it were injected directly into the body.
    • Entering a Cell. After injection, the vaccine particles bump into cells and fuse to them, releasing mRNA. The cell’s molecules read its sequence and build spike proteins.
    • Spotting the Intruder. When a vaccinated cell dies, the debris will contain many spike proteins and protein fragments, which can then be taken up by a type of immune cell called an antigen-presenting cell.
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