None of the COVID-19 vaccines currently authorized for use in the United States uses the live virus that causes COVID-19. You may have symptoms like a fever after you get a vaccine. This is normal and a sign that your immune system is learning how to recognize and fight the virus that causes COVID-19. Learn more about the facts behind COVID-19 vaccines:
https://www.cdc.gov/coronavir…/2019-ncov/vaccines/facts.html
