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  2. Jan 23, 2024 · A 2021 study found 98% of people had antibodies against SARS-CoV-2’s spike protein (a protein on the surface of the virus that allows it to attach to our cells) one month after symptom onset....

  3. At a Glance. The immune systems of more than 95% of people who recovered from COVID-19 had durable memories of the virus up to eight months after infection. The results provide hope that people receiving SARS-CoV-2 vaccines will develop similar lasting immune memories after vaccination.

  4. May 3, 2024 · Data from vaccine manufacturers suggest that, for most people, vaccines and booster doses start protecting you against the coronavirus within a week or two after your injection. However, specific factors, discussed later, can play a role in how quickly you develop immunity against COVID-19. Does the Vaccine Type Matter?

  5. Jan 13, 2022 · 1. DON’T assume you’re immune from COVID-19. The most important thing to do is NOT assume you’re immune to the coronavirus, even if you’ve had a confirmed COVID-19 diagnosis before. “We’ve already seen at least four different variants crop up — alpha, delta, mu, and omicron — in the last two years,” says Chemaly.

  6. A study suggests that people’s immune systems remember COVID-19 for months after recovery. The immune system makes different types of cells and molecules to fight disease. These include antibodies, T cells, and B cells. Researchers looked at immune responses from about 200 people who’d recovered from COVID-19.

  7. Mar 18, 2024 · But as of now, the answer is no, you can’t be immune to COVID-19, at least as far as we know. How does COVID immunity work? By now you’re probably starting to realize that COVID immunity is a more complicated subject than most people might realize. But let’s step out of the realm of the speculative and focus on what we know for sure.

  8. Apr 29, 2022 · A study from U.K. researchers published in the New England Journal of Medicine in March found that infection-related immunity stays strong for up to a year, then began to wane—whereas the...

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