A member asked:

Can the flu shot cause the flu?

3 doctors weighed in across 2 answers

No: No. The virus in the vaccine is not a live virus and cannot cause the flu.

Answered 3/31/2012

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Dr. John Leander Po answered

Specializes in Infectious Disease

No- it activates....: The flu shot causes an immune response that is similar but less intense reaction compared to the real flu (fever, mild myalgias, arthralgias) . This is expected and should not deter you from getting the flu shot because the reaction is reassuring you that your immune system will be strong enough in the future to create an immune response against the real flu virus.

Answered 9/28/2016

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