COVID-19 vaccines are safe and effective. Millions of people in the United States have received COVID-19 vaccines, and these vaccines will undergo the most intensive safety monitoring in U.S. history. CDC recommends you get a COVID-19 vaccine as soon as you are eligible. Adverse events described on this page have been reported to the Vaccine Adverse Event Reporting System (VAERS).
CDC reports COVID-19 vaccination data online on COVID Data Tracker and in vaccination datasets.
A review of the week's key data from CDC's COVID Data Tracker, narrative interpretations, and visualizations.
CDC recommends that moderately or severely immunocompromised people receive an additional dose of mRNA COVID-19 vaccine at least four weeks after a second dose of Pfizer-BioNTech COVID-19 vaccine or Moderna COVID-19 vaccine.
people who are up to date with their vaccines are well protected from serious illness or other health outcomes.
COVID-19 Pre-exposure Prophylaxis
Answers to commonly asked questions about COVID-19 vaccines, including vaccine cost, availability, and types.
Operational guidance on COVID-19 prevention for K-12 schools and Early Care and Education (ECE)/childcare programs
Because COVID-19 is a new disease with new vaccines, you may have questions about what happens before, during, and after your appointment to get vaccinated. These tips will help you know what to expect when you get vaccinated, what information your provider will give you, and resources you can use to monitor your health after you are vaccinated.
CDC is analyzing healthcare data, partnering with clinicians, and working with researchers to learn more about post-COVID conditions (Long COVID).