In Reply to: Bali Belly, what is it? is it posted by Baliku on Monday, 18. April 2005 at 16:13 Bali Time:
traveller's diarrhoea. Plenty of info on the web in response to that search. Kiwi Carol and Smudge are spot on.
If someone was infected with one of these bugs and didn't wash their hands properly after number 2s they could pass it on.