A member asked:

If a dead virus enters your body can it still harm you or make you sick?

4 doctors weighed in across 2 answers
Dr. Donald Alves answered

Specializes in Emergency Medicine

Not if dead: That is the basis for some vaccinations.

Answered 3/16/2013

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No, it can't.: The only way a virus can make you sick is if it gets into your cells, affects the activity inside those cells, and then multiplies and spreads to other cells. And only a live virus can do that. A "dead" virus, like that found in the flu vaccine, absolutely can not cause the flu. On the other hand, any vaccine can possibly cause an allergic reaction, so i suppose it could harm you that way.

Answered 9/25/2016

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