Spent ~30 months on the ground in Asia in the early '70s, with one occasion of intestinal distress, courtesy the Officer's Club at Korat RTAFB. I was cautious about street vendors & tap/ground water; other- wise "Eat where the locals eat" seemed to work... I suspect it's true one's system adapts, given the chance... Jack --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .