How long is someone safeguarded from the flu after getting a flu vaccination?

It is important to be vaccinated against the flu every year. Getting vaccinated in the early fall season is best because it allows for time to build up your immunity before flu season is in full swing, according to the U.S. Department of Health and Human ServicesOff Site Icon (HHS).

A flu vaccine protects against the flu for one full flu season, according to the HHS. The vaccine is not designed to last for multiple years, and it changes each year to defend against the three flu virus strains most likely to cause issues that year.

Talk with your doctor for more information about how long the flu vaccine will safeguard against the virus.

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