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 infection remains unknown. Michigan officials initially announced the outbreak with over 170 cases, which has since grown to 992, including about 40 hospitalizations.

Further details on the outbreak are available from KPRC 2 Houston, including information on investigations into similar illnesses in 28 other states, such as Ohio.