"Fresh raw vegetables like lettuce, spinach, tomatoes and green onions were responsible for the illness or deaths of nearly 19,000 people nationwide over a five-year period. Vegetables are nearly as dangerous as under-cooked meat when it comes to transmitting deadly food illnesses like E. coli, salmonella and hepatitis, according to a study of federal outbreak records. . . . No other foodstuff came close to the threats posed by vegetables and meats, the study found. Seafood like raw oysters and tuna was a distant third, causing fewer than 3,000 deaths or illnesses."
I always knew there was a good reason not to eat your vegetables. I am vindicated. Take that, you self-righteous uber-health-conscious vegans!
Followup: There are some articles like this online that say that washing veggies helps, but it has to be fairly extreme (5-minute) washing. If the veggies were grown using a lot of manure for fertilizer, those nasty microbes in the manure can travel right into the plant. So much for healthy organic produce, eh? We're not buying bagged lettuce any more, and I wash my veggies and strip off the outer leaves on iceberg lettuce, but that's about all we do.