how COVID-19 vaccines work.It typically takes a few weeks for the body to build immunity after vaccination. That means it’s possible a person could be infected with the virus that causes COVID-19 just before or just after vaccination and get sick.
This is because the vaccine has not had enough time to provide protection.Vaccines currently in clinical trials in the United States won’t cause you to test positive on viral tests, which are used to see if you have a .If your body develops an immune response, which is the goal of vaccination, there is a possibility you may test positive on some antibody tests.