US health officials report rising cyclospora infections. People ate tainted iceberg lettuce. The parasite clings on the greens regardless of washing. Symptoms comprise watery diarrhoea, stomach cramps as well as exhaustion. Some cases continue weeks. New cases are emerging in various states. The CDC and FDA say discard any risky lettuce now. Skip raw salads with iceberg lettuce for now. Restaurants must take out it from menus without delay.