I would be willing to bet that AoO did in fact get one of the Gastroenteritis viri because the symptoms are almost identical to the flu (so much so that symptoms of infection are often refered to as the stomach flu), but its not caused by influenza. I really should have put 2 and 2 together when his first post said he had the flu (and I said he didn't, oddly enough). Its also probably the Norwalk Virus since Rotavirus commonly affects children only.
I have a certification in Sanitation. It was a really fun class, that was taught by a professor that was a combination of Col. Sanders and Ben Stein. Having to memorize all of the virus/bacteria/parasites for the certification exam was fun, although I admit, right now Im cheating by using my textbook with the info in it. Plus we had to watch all the 20/20 or Dateline specials on the fast food workers exhibiting poor hygenie (woman scratching her private area under her clothes before grabing a donut with her bare hands at a Dunkin Donuts, guy sneezing in his hands and going right back to rolling a pizza out at some pizza place..etc.)