A parasite that causes diarrhea has been detected in 31 states: How to prepare food and what to avoid

The CDC has confirmed 843 cases of cyclosporiasis and 86 hospitalizations as of July 9, with a further 1,500 cases under investigation. Yana Iskayeva/Getty Images An outbreak of cyclosporiasis has hit the US, with cases reported in 31 states since May 1. Symptoms of the intestinal illness include diarrhea, nausea, and fatigue. The source of the outbreak is unknown, but past culprits have included raspberries and lettuce. There's an outbreak of a parasite that causes diarrhea in the US, so you may be wondering if your go-to summer salad is safe. According to the Centers for Disease Control and Prevention, cyclosporiasis, an intestinal illness caused by a microscopic parasite called cyclospora, has been reported in 31 states since May 1. It confirmed 843 cases and 86 hospitalizations as of July 9, with a further 1,500 cases under investigation.