A member asked:

Heard h1n1 is back in the us. why?

A doctor has provided 1 answer
Dr. Michael Ein answered

Specializes in Infectious Disease

Never left: H1n1 influenza has been present in the us since the pandemic several years ago. This year it is only accounting for a few percent of the cases of influenza tested by the cdc. H3n2 and influenza b have accounted for most of the cases so far this year.

Answered 10/23/2017

5.4k views

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