By the way, is Captain America up to date on his vaccinations? He was frozen when we got the polio vaccine....
Remember the line from
The Simpsons about Mr. Burns' diseases competing and neutralizing each other's effects, thus
keeping him alive?:"Steve’s
canonical list of health conditions— shown onscreen in
Captain America: The First Avenger (henceforth referred to as CA:TFA) and in the Captain America museum exhibit in CA:TWS — includes asthma, scarlet fever, rheumatic fever, sinusitis, heart palpitations, nervous trouble, bone/joint/other deformity, color blindness, scoliosis, high blood pressure, diabetes, anemia, partial deafness, astigmatism and easy fatiguability."
Since the Super-Soldier Serum which he was exposed to took him to the peak of human health, I imagine that polio wouldn't get a look in. But of course he remembers its ravages:
Sam Wilson: "You must miss the good old days, huh?"
Steve Rogers: "Well, things aren't so bad. Food's a lot better; we used to boil everything. No polio is good. Internet, so helpful. I've been reading that a lot trying to catch up."
--
Captain America: The Winter Soldier (2014)