

COVID-19 overview
Stay up to date
The virus that causes COVID-19 is still circulating year-round with winter and summer peaks. That's where staying up to date with the COVID-19 vaccine comes in—it is one of the first lines of defense against the virus.
Current
vaccine season
Because COVID-19 is always evolving, the vaccines are updated. That's why it's important to stay current. This season's COVID-19 vaccines have been updated to more closely match the circulating virus strains.
The role of updated vaccines
Changes in the virus make it harder for your body to defend itself against COVID-19. An updated vaccine can help your body recognize newer strains of the virus and help protect you from severe COVID-19 illness.
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