A member asked:

I had mono when i was 15. my sister has it now; what are the chances that i will get sick if am exposed to it again?

4 doctors weighed in across 2 answers
Dr. Cindy Williams answered

Specializes in Pediatrics

Mononucleosis : Once you have mono, you have permanent immunity.

Answered 6/12/2014

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Depends: The EB virus is responsible for >85% of Mono and confers immunity once you have it. Since there are other agents that produce a mono syndrome, your risk is dependent on whether or not it is the same you had or a different form.

Answered 6/13/2014

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