The vaccine is the best protection against the virus that causes COVID-19. We are still learning about the length of time both natural immunity (immunity the body develops after an illness) and vaccine-induced immunity for COVID-19 will last.
People are protected best from COVID-19 when they stay up to date with their COVID-19 vaccines, which includes getting all recommended boosters when eligible. Millions of people 6 months and older are eligible to receive an updated, bivalent vaccine and will benefit from additional protection. To get the best protection against COVID-19, especially against severe illness and hospitalization, stay up to date on your COVID-19 vaccines.
The CDC has guidance for everyone 6 months and older based on age and medical condition.