I've been vegetarian for around 16 years now and have never been ill from something I ate. That only happened once about twenty years ago after I ate fish. I didn't become vegetarian for any other reason than I love animals and can't bare the thought of eating them. I have to admit I would be a bit more careful if I did eat meat especially if seafood was involved (known quite a few people who have had fp from things like prawns or scallops) - so to be on the safeside I'd never risk it whilst dining out for example. My dad and step-mum actually had a really nasty bout of food poisoning from ready cooked rice from the local supermarket a couple of years ago, and as others have mentioned, other non-meat food stuffs can cause it, so vegetarians and vegans can still be effected.
Just wondering with the lettuce causing illness, could it have been the pre-washed lettuce you buy in salad packs - these have to be eaten within a certain time and once open should ususally be consumed within 24 hours, sometimes people don't realise that(one of my friends opened one such pack and ate it all week - he was ok though!).
.•:*¨¨*:•.Tracey.•:*¨¨*:•.
Fall seven times, stand up eight.
- Japanese proverb