COVID-19 Hospitalization Risk by Vaccine Status

Remaining up to date on vaccination reduces the risk of hospitalization due to COVID-19. Older adults who are not up to date on vaccination are at especially high risk for hospitalization.

Currently, up to date on vaccination includes people aged 5 and over who have received a bivalent COVID-19 booster dose, or who have completed a primary vaccine series recently – in the last five months for mRNA vaccines (Pfizer-BioNTech or Moderna), or the last two months for the Johnson & Johnson vaccine. Children between 6 months and 4 years old are up to date if they have completed a primary vaccine series.

Before the bivalent booster was introduced in September 2022, up to date on vaccination includes people who had received their recommended COVID-19 booster doses, people who had completed a primary vaccine series recently – in the previous five months for mRNA vaccines (Pfizer or Moderna), or the previous two months for the Johnson & Johnson vaccine, people 50 or older who had received their second booster dose 4 months after the first booster, and people ages 5 through 49 who received their first booster. Children between 6 months and 4 years old are up to date if they have completed a primary vaccine series.

Currently, not up to date on vaccination includes people who have not completed a primary vaccine series, and people ages 5 and over who completed the mRNA vaccine series more than five months ago or the Johnson & Johnson vaccine more than two months ago and have not received a bivalent booster.

The risk of hospitalization is defined as the number of people hospitalized per 100,000 people of each vaccination status.

Data updated monthly.