[IndispensableDestiny]

It was in the first link in the original post...it's not a mistake: https://www.cdc.gov/nchs/fastats/flu.htm

The error I refer to (6515) is likely an error on the page you linked to. The 55,672 number is in the PDF linked to at that page.

[DouglasKC]

The 55000 in the footnote is for flu and pneumonia combined.