Nearly 7,000 cases of cyclosporiasis confirmed or under investigation nationwide, CDC says

Health newsNearly 7,000 cases of cyclosporiasis confirmed or under investigation nationwide, CDC saysMichigan health officials say their investigation suggests lettuce or salad greens as possible sources of the foodborne illness, but no specific food has been identified. Listen to this article with a free profile00:0000:00Cyclosporiasis is an infection marked by intense diarrhea. Thousands of cases nationwide have been reported within the past month.CDCShareAdd NBC News to GoogleJuly 14, 2026, 1:02 PM EDTBy Erika EdwardsNearly 7,000 people nationwide may have cyclosporiasis, a foodborne illness that can cause weeks of severe diarrhea, the Centers for Disease Control and Prevention said Tuesday. The bulk of the cases are in Michigan, which has confirmed 3,309 cases on its own. Subscribe to read this story ad-freeGet unlimited access to ad-free articles and exclusive content.In a health alert, the CDC reported it had confirmed 1,645 people nationwide have been sickened by cyclosporiasis. An additional 5,100 cases are under investigation. At least 34 states are reporting cases. The national tally lags behind what states are reporting as the agency must confirm each case.According to the CDC, 141 people have been hospitalized since cases were first reported in May. No deaths have been reported. There have been 403 cases in New York City; 374 of them were reported between May and July 10, according to the city’s health department. The CDC suspects that at least 400 of the cases across four states — Kentucky, Michigan, Ohio and West Virginia — are connected. Michigan health officials said that based on more than 1,000 interviews with people who’ve tested positive, lettuce or salad greens have emerged as possible sources. Health officials haven’t identified a supplier of the produce or where the products have been distributed. Michigan’s chief medical executive, Dr. Natasha Bagdasarian, suggested the source of the outbreak is likely larger than one restaurant chain or groc...