Frequently Asked Questions about COVID-19 Vaccination

COVID-19 Vaccination
  • There are two COVID-19 vaccines currently authorized and recommended for use in the United States, and three other vaccines are currently in large-scale clinical trials. To learn more about the different vaccines for COVID-19 and how vaccines work, visit  https://www.cdc.gov/coronavirus/2019-ncov/vaccines/different-vaccines.html

  • 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/coronavirus/2019-ncov/vaccines/facts.html

  • How many people need to get a COVID- 19 vaccine for herd immunity? Herd immunity means that enough people in a community are protected from getting a disease because they’ve already had the disease or they’ve been vaccinated. Herd immunity makes it hard for the disease to spread from person to person, and it even protects those who cannot be vaccinated, like newborns. While experts don’t yet know what percentage of people would need to get vaccinated to achieve herd immunity, vaccination is a safer way to build protection than getting sick with COVID-19.Have a question about COVID-19 vaccines? See answers to our most frequently asked questions: https://www.cdc.gov/coronavirus/2019-ncov/vaccines/faq.html