It has to be a tie between Afternoon Delight by Starland Vocal Band and (You're) Having my Baby by Paul Anka--just two of the incredibly cringey songs I grew up listening to on AM radio between the ages of 10-13.

During the time period of the study the vaccine was not very effective against type A flu strains but wasn't too bad against the type B strains. Of course, this is within a household setting as opposed to community transmission which is typically studied. VE definitely varies year to year.