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  1. Jul 26, 2021 · The inhospitality of the vaccinated body to SARS-CoV-2 is what’s given many researchers hope that long COVID, too, will be rarer among the immunized, though that connection is still being explored.

  2. When a person is vaccinated, their body’s immune system begins to create that protein, followed by antibodies that can fight the COVID-19 virus, should that person subsequently be infected with the disease. Both the Pfizer and Moderna vaccines require an initial injection and a second dose delivered several weeks later.

    • Vaccines Are Made to Resemble Invaders
    • What Happens When The Vaccine Enters Your body?
    • What Happens Once The Immune System Gets Revved Up?
    • Why Is My Arm sore?

    The most important thing to understand about vaccines is that they teach your body how to gear up to fight an infection, without your body having to deal with the infection itself. In this way, vaccines help your body be prepared for invasions by germs that could otherwise make you very sick. All three of the COVID-19 vaccines available in the U.S....

    Once a COVID-19 vaccine is injected, the mRNA or DNA gets swallowed up by tissue cells and special immune cells that live in muscles, skin and organs called dendritic cells. Dendritic cells keep watch over all parts of the body like sentinels, searching for signs of invading germs – like the coronavirus. As soon as the DNA or mRNA is inside the den...

    Thanks to that process, the body is now on high alert and ready to learn to fight invaders – in this case, the spike proteins made after injection with the COVID-19 vaccine. Immune cells in the body, called B-cells and T-cells, recognize the warning signs of an outside invader. Thousands of these cells rush to the area to learn about this new threa...

    As all of these important processes are happening inside your body, you might see some physical signs that there’s a struggle going on underneath the skin. If your arm gets sore after you get the shot, it’s because immune cells like the dendritic cells, T-cells and B-cells are racing to the arm to inspect the threat. You might also experience a fev...

  3. Oct 13, 2023 · It is important to stay up to date with recommended COVID-19 vaccines, especially for people at higher risk of severe disease, such as older adults and people with medical conditions. 3. When side effects from COVID-19 vaccines occur, they are usually mild or moderate. COVID-19 vaccines have undergone—and continue to undergo—the most ...

  4. Oct 29, 2021 · The aim of this review is to explain what happens to the immune system after recovery from COVID-19 and/or vaccination against SARS-CoV-2, the virus that causes the disease. We detail the way in which the immune system responds to a SARS-CoV-2 infection, including innate and adaptive measures. Then, we describe the role of vaccination, the main ...

    • Bruna T. Tiyo, Gabriela J. H. Schmitz, Marina M. Ortega, Laís T. da Silva, Alexandre de Almeida, Tel...
    • 2021
  5. Jan 20, 2021 · In April 2021, use of the Janssen/J&J COVID-19 vaccine was paused after six women—out of 6.8 million who received the one-shot vaccine--developed a rare clotting disorder. The condition is similar to a reaction some people have to an anti-clotting medication called heparin. However, the CDC lifted the pause ten days later after meeting to ...

  6. Apr 21, 2021 · Side effects are normal responses to the injection of a foreign substance. They include things like fever, muscle pain and discomfort at the injection site, and are mediated by the innate immune ...