Updated September 12, 2022

The COVID-19 vaccines are very good at preventing severe disease. The primary series (first two doses of Pfizer, Moderna or Novavax or first dose of Johnson & Johnson) provides good protection against severe disease for many people. Boosters increase protection especially for older adults and anyone with underlying conditions.

A booster shot is an additional shot recommended to give longer lasting protection. Many vaccines need boosters after a period of time. 

An additional dose of vaccine is different from a booster. An additional dose is recommended for people who have certain serious medical conditions and need extra doses to get a good immune response.

New: The updated COVID-19 booster

Updated COVID-19 boosters designed to offer protection against Omicron are now available.

The CDC recommends that everyone who is eligible stay up-to-date on vaccinations by getting an updated booster dose at least 2 months after their last COVID-19 shot—either since their last booster dose, or since getting their primary series (second dose of Pfizer, Moderna or Novavax or first dose of Johnson & Johnson). 

The new boosters are an updated version that boost immunity against the original coronavirus strain and were designed to protect against the newer Omicron variants.

Who can get  a COVID-19 booster shot? 

The updated COVID-19 booster shot is now available for everyone age 5 and older two months after their last dose. 

Booster supplies may be temporarily limited for ages 5-11.

Who should get an additional dose? 

For people who are age 5 and older and who are immunocompromised, an additional dose is recommended at least 28 days after the initial series (two doses of Pfizer or Moderna, one dose of Johnson & Johnson). 

Where can I get a booster or additional dose? 

To get a booster shot:

Read more about vaccine boosters and additional doses (OHA)