[HollyB]

Interesting. Did not know that about Mumps. Looks like 3 Universities are involved so far.

Apparently many, if not all, of the effected kids were immunized in childhood. I was surprised so many became ill in spite of being vaccinated.

[Tilted Irish Kilt]

Mumps is a virus
Viri, by their very nature and reliance on RNA, rather than DNA
are easily mutated.

https://www.cdc.gov/mumps/index.html