Funny you mention this.... my wife had to go to the hospital for Salmonella poisoning. The only possible cause was the food she ate at the game. We didn't even know she had food poisoning until a few weeks later when the Department of Health contacted us. The doctors thought she just had a stomach flu.
Unfortunately, they notified us so late we could not officially "pin-point" Aramark as the culprit. But we are pretty darn sure it was them. It was either food I made for us or the Hot Dog that ONLY she got at the game.