A parasitic infection outbreak in Michigan has grown to over 1,000 cases, with nearly 1,000 people diagnosed. The infection causes weeks of watery diarrhea.

No deaths have been reported, but the source of the infections remains unknown. Michigan officials are investigating, and other states, including Ohio, are also looking into similar illnesses.

Further details on the outbreak, including the latest numbers and investigation updates, are available from the source. The outbreak is notable as one of the largest in the nation in recent years, and Michigan typically sees only about 50 cases annually.