Key Things to Know About COVID-19 Vaccines
Everyone six months and older is eligible to get a free COVID-19 vaccination. Everyone ages 5 and older should get one booster after completing their COVID-19 vaccine primary series. Learn more about if you qualify for a booster shot by clicking the chart below.
The U.S. Food and Drug Administration authorized a second booster dose of either the Pfizer-BioNTech or the Moderna COVID-19 vaccines for older people and certain immunocompromised individuals. The FDA previously authorized a single booster dose for certain immunocompromised individuals following the completion of a three-dose primary vaccination series.
COVID-19 vaccines are effective at helping protect against severe disease and death from the virus that causes COVID-19.
The benefits of COVID-19 vaccination outweigh the known and potential risks, which are rare.
People who are fully vaccinated can resume many activities they did before the pandemic. However, CDC recommends indoor masking in public settings and areas of substantial or high transmission.
Make sure you are up to date with your COVID-19 vaccines before travel. Check your destination’s COVID-19 situation before traveling. State, tribal, local, and territorial governments may have travel restrictions in place. Wearing a mask over your nose and mouth is recommended in indoor areas of public transportation (including airplanes) and indoors in U.S. transportation hubs (including airports). Do not travel if you have COVID-19 symptoms, tested positive for COVID-19, are waiting for the results of a COVID-19 test, or had close contact with a person with COVID-19 and are recommended to quarantine.
The World Health Organization classified a new COVID-19 variant as a variant of concern and named it Omicron. As of December 20, 2021, Omicron has been detected in every U.S. state and territory and continues to be the dominant variant in the United States.
The virus that causes COVID-19 is constantly changing, and new variants of the virus are expected to occur.
Moderna COVID-19 Vaccine Generates Long-Lasting Immune Memory
According to research from the National Institutes of Health, people who received low doses of the Moderna COVID-19 vaccine had strong immune memories of the virus six months after being fully vaccinated.
The findings shed light on how lasting immunity develops after vaccination.