Can the COVID-19 vaccine help me even if I've already been affected by COVID-19?

Yes. Getting sick with COVID-19 offers some protection from future illness with COVID-19, sometimes called “natural immunity.” The level of protection people get from having COVID-19 may vary depending on how mild or severe their illness was, the time since their infection, and their age. No currently available test can reliably determine if a person is protected from infection.


All COVID-19 vaccines currently available in the United States are effective at preventing COVID-19. Getting a COVID-19 vaccine gives most people a high level of protection against COVID-19 even in people who have already been sick with COVID-19.


Emerging evidence shows that getting a COVID-19 vaccine after you recover from COVID-19 infection provides added protection to your immune system. One study showed that, for people who already had COVID-19, those who do not get vaccinated after their recovery are more than 2 times as likely to get COVID-19 again than those who get fully vaccinated after their recovery.

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1. Is the COVID-19 vaccine safe?
2. What are the ingredients in the COVID-19 vaccine?
3. How do COVID-19 vaccines work?
4. Which COVID-19 vaccine should I get?
5. How long does it take to be fully protected after receiving the vaccine?
6. Will I have a positive COVID-19 test after getting the vaccine?
7. Do I still need to wear a mask after getting the COVID-19 vaccine?
8. If I’ve been vaccinated and was exposed to someone who has COVID-19, do I need to quarantine?
9. Can the COVID-19 vaccine help me even if I've already been affected by COVID-19?
10. Can I get my flu shot at the same times as my COVID shot?
11. Can women who are pregnant get the COVID-19 vaccine?
12. Why was I told to wait a month after getting the vaccine before getting a mammogram?
13. How do COVID-19 vaccines protect the community?
14. Does the vaccine have any side effects?
15. What is V-safe?
16. How much does the vaccine cost?
17. Are the vaccines FDA approved?
18. How were the vaccines tested?