US health officials announce increasing cyclospora infections. People consumed contaminated iceberg lettuce. The parasite stays on the greens even after washing. Symptoms include watery diarrhoea, stomach cramps and exhaustion. Some cases last weeks. New cases are appearing in multiple states. The CDC and FDA say throw away any questionable lettuce now. Skip raw salads with iceberg lettuce for now. Restaurants must take out it from menus without delay.