India, July 7 -- A parasitic infection called cyclosporiasis has triggered concern across several US states after health officials reported a rise in cases linked to severe gastrointestinal symptoms, including prolonged and sometimes intense diarrhea.

Michigan has reported one of the largest clusters, with hundreds of infections recorded in recent weeks. While officials suspect contaminated fresh produce may be behind the outbreak, investigators have not yet identified a specific food item, brand or supplier responsible.

Cyclosporiasis is a foodborne illness caused by the parasite Cyclospora cayetanensis, according to the Centers for Disease Control and Prevention.

The infection occurs when people consume food or water contaminated wit...