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A member asked:
Why do i need to take yearly flu shots?
8 doctors weighed in across 2 answers
Change: Unfortunately the immunity triggered by the vaccine is not life long. It may wear off. In addition, the flu strains may change each year requiring a different vaccine from the year before.
Answered 3/15/2019
6.3k views
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Different strains: Each year there are different strains in the flu shot so you need one each year.
Answered 9/12/2013
4.9k views
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