people who are up to date with their vaccines are well protected from serious illness or other health outcomes.
CDC reports COVID-19 vaccination data online on COVID Data Tracker and in vaccination datasets.
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.
CDC recommends everyone ages 5 years and older get vaccinated against COVID-19. Everyone ages 12 years and older should also get a COVID-19 booster shot.
People who have had 2 shots of Pfizer-BioNTech or Moderna vaccines may need to start receiving a COVID-19 booster shot 8 months after their second dose.
Answers to commonly asked questions about COVID-19 vaccines, including vaccine cost, availability, and types.
A review of the week's key data from CDC's COVID Data Tracker, narrative interpretations, and visualizations.
Two infographics that summarize recommendations for people with COVID-19 and for COVID-19 close contacts.
Information on protecting yourself and others from COVID-19 while traveling or using public transportation.
Provides information on testing for coronavirus infection, including how to decide about testing, how to get a test, and what to do after a viral test.
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).
Learn more about the recommendation for masks on public transportation and transportation hubs to prevent the spread of COVID-19.
Find a social media toolkit to encourage people to stay up to date on COVID-19 vaccines and boosters, including sample messages and images.
CDC is analyzing healthcare data, partnering with clinicians, and working with researchers to learn more about post-COVID conditions (Long COVID).
Factsheet information and resources for the global COVID-19 response, including non-U.S community mitigation, non-U.S. clinical mitigation.
Noncitizen nonimmigrants must be fully vaccinated to travel by air to the US. When you travel to the US by air, you are also required to show a negative COVID-19 test or documentation of recovery.
Other diagnostic tests for SARS-CoV-2
Noncitizen nonimmigrants must be fully vaccinated to travel by air to the US. Some categories of noncitizen nonimmigrants are excepted from the requirement but will need to fulfill other requirements.
Since November 2020, the United Kingdom (UK) has reported a rapid increase in COVID-19 cases in London and southeast England. This rapid increase in cases has been linked to a different version-or variant-of the virus that causes COVID-19 (SARS-CoV-2).