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Why do I need to get a new flu shot every year?

A flu vaccine is needed every season for two reasons:

  1. The immune protection from vaccines declines over time, so an annual vaccine helps give you and your family the best protection. 
  2. There are many types of flu viruses, and they are constantly changing, so flu vaccines are updated every year to protect against the viruses that research suggests may be most common in the U.S. during the upcoming flu season. For the best protection, everyone 6 months and older should get vaccinated every year.

Source:
CDC: Key Facts about Seasonal Flu Vaccine

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As parents, determining how best to protect our children can be overwhelming and confusing. We’re here to help.

Related Questions

Immunity is the body’s way of protecting against and preventing disease. Children are born with an immune system composed of cells, glands, organs, and fluids located throughout the body…
To provide the best protection, some vaccines require an additional dose or doses as we get older…

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About I Vaccinate

I Vaccinate provides information and tools based on real medical science and research to help Michigan parents protect their kids. Support is provided by the Michigan Department of Health and Human Services and the Franny Strong Foundation.

You’ve got questions. That’s a good thing.

As parents, determining how best to protect our children can be overwhelming and confusing. We’re here to help.

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