IF YOU ARE FULLY VACCINATED
CDC has updated its guidance for people who are fully vaccinated. See Recommendations for Fully Vaccinated People.
IMPORTANT UPDATE FOR SCHOOLS
CDC recommends schools continue to use the current COVID-19 prevention strategies for the 2020-2021 school year. Learn more
Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more

Ensuring COVID-19 Vaccines Work

Ensuring COVID-19 Vaccines Work
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Vaccine Effectiveness

  • All COVID-19 vaccines currently available in the United States are effective at preventing COVID-19 as seen in clinical trial settings.
  • Research provides growing evidence that mRNA COVID-19 vaccines offer similar protection in real world conditions.
  • COVID-19 vaccination is an important tool to help stop the COVID-19 pandemic.
  • COVID-19 vaccination helps protect people from getting sick or severely ill with COVID-19 and might also help protect people around them.
  • To receive the most protection, people should receive all recommended doses of a COVID-19 vaccine.
  • Some people who are fully vaccinated against COVID-19 will still get sick because no vaccine is 100% effective. Experts continue to monitor and evaluate how often this occurs, how severe their illness is, and how likely a vaccinated person is to spread COVID-19 to others.
  • CDC recommends you get a COVID-19 vaccine as soon as one is available to you.

Do COVID-19 vaccines work?
Are COVID-19 vaccines safe?

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