American health officials report increasing cyclospora infections. People consumed tainted iceberg lettuce. The parasite clings on the greens even after washing. Symptoms include watery diarrhoea, stomach cramps plus exhaustion. Some cases continue weeks. New cases are popping up in multiple states. The CDC and FDA say throw away any questionable lettuce now. Avoid raw salads with iceberg lettuce for now. Restaurants must take out it from menus without delay.