American health officials report rising cyclospora infections. People ingested tainted iceberg lettuce. The parasite clings on the greens despite washing. Symptoms include watery diarrhoea, stomach cramps as well as exhaustion. Some cases last weeks. New cases are popping up in several states. The CDC and FDA say throw away any risky lettuce now. Skip raw salads with iceberg lettuce for now. Restaurants must pull it from menus without delay.