American health officials announce increasing cyclospora infections. People consumed contaminated iceberg lettuce. The parasite stays on the greens despite washing. Symptoms comprise watery diarrhoea, stomach cramps and exhaustion. Some cases persist weeks. New cases are emerging in various states. The CDC and FDA say toss any risky lettuce now. Stay away from raw salads with iceberg lettuce for now. Restaurants must take out it from menus at once.