A Cyclospora outbreak linked to lettuce has spread across nine US states, prompting public-health concern over a parasite that can cause prolonged gastrointestinal illness. The expansion matters because contaminated fresh produce can expose consumers in several regions before the source is fully identified or removed from sale.

Cyclospora infection, or cyclosporiasis, commonly causes watery diarrhoea, stomach cramps, nausea and fatigue, and symptoms can persist for weeks without treatment. The available article text does not provide case numbers, affected states, a specific lettuce product or recall information, so consumers should rely on current guidance from public-health authorities.