|Hard traveling men.|
As I sit here, waiting for my next "call to nature", it occurs to me that the only times I've seen illness / viruses / flus and the like in an RPG campaign, it been as part of a plot hook.It got the gerbil running in its wheel and I started to think about the other riggers a hard traveling, hard fighting party of adventures might face. Footwear, for example, would probably have to be replaced at least once or twice a year, depending on what kind of paces they're put through. Clothes would likely fair worse, especially given frequent combat. Then there's personal hygiene. Questing would work up a mighty sweat and unless a party bathes regularly, villagers (and monsters!) would undoubtedly smell them coming from a mile away!
I don't ever recall an adventuring party getting sidelined by dysentery, a flu, the norovirus (love ya dude, but you are more than welcome to take your leave now) or any such run of the mill illness.