> about the closest I can come to a document case of tomato sauce related food poisoning is this 20-year old who died from eating spaghetti. His case is not a lot help though, since he had apparently left the spaghetti unrefrigerated for five days, and since the toxins they found were in the noodles, not the sauce.

I think the interface between the sauce and the crust in a pizza has some similarities to a noodle. Reading the study linked in the article makes me more hesitant to eat 'aged pizza' (as I used to call it in my college days)