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A member asked:
How long does the flu virus last if you had vaccine?
A doctor has provided 1 answer
Depends: If you had the injected vaccine it was derived from dead virus, it was never alive in you, but will help develop antibodies that last for years to those strains.If you had the nasal spray, that weakened flu germ may stay in your system for a week or more.
Answered 10/23/2017
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