A member asked:

My sister had flue shot 4months before the year up she has developed boil on side of knee she never had them before is that normal ?

5 doctors weighed in across 2 answers
Dr. Steve Springer answered

Specializes in Family Medicine

Coincidence: I would not think there is any medical or causal link between the flu shot and the boil. She should feel completely safe about getting one again next year.

Answered 4/9/2016

4.6k views

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Boil and Flu.: There is no connection between the flu vaccine and a boil on the knee. Boils occur randomly and unexpectedly. Often there is no inciting factor.

Answered 4/9/2016

4.6k views

Thank

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