American health officials note rising cyclospora infections. People ingested contaminated iceberg lettuce. The parasite clings on the greens even after washing. Symptoms include watery diarrhoea, stomach cramps as well as exhaustion. Some cases continue weeks. New cases are appearing in various states. The CDC and FDA say discard any questionable lettuce now. Skip raw salads with iceberg lettuce for now. Restaurants must pull it from menus immediately.