Yahoo Answers is shutting down on 4 May 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

How do I know if the vaccine works, without being exposed to the virus?

(when I actually get it)

5 Answers

Relevance
  • 2 months ago
    Favourite answer

    Three weeks after the vaccine (2nd vaccine if you get 2), you can get an antibody test to see if you have protective levels of IgG and IgM antibodies.

    == you will have to continue to test to see how long the protection lasts. 

  • Andy C
    Lv 7
    2 months ago

    You won't.   Can't. 

  • 2 months ago

    You won't know if you are exposed to the virus. The point of the vaccine is to protect you if you do.

  • ?
    Lv 7
    2 months ago

    You know because of the very extensive trials they ran on the vaccines. That's how science works. Things get tested. There's no reason to think that it worked on the 75,000 people in the tests, but wouldn't work on you. 

  • 2 months ago

    you'll know when you dont get covid

Still have questions? Get answers by asking now.