You don't even need to be infected to develop the right antibodies: https://www.randombio.com/coronavirus2.html https://www.randombio.com/coronavirus2.html Yo

You don't even need to be infected to develop the right antibodies: https://www.randombio.com/coronavirus2.html https://www.randombio.com/coronavirus2.html You may not have a lot of them, but you have already evolved targeted killers.