Diarrhoea-causing parasitic infection (AP image)NEW YORK: A diarrhea-causing parasite outbreak has sickened nearly 1,000 people in Michigan, making it the largest cyclospora outbreak ever recorded in the state, and among the biggest reported in US in recent years.While no deaths have been reported, Michigan first alerted the public to the outbreak last week after more than 170 cases were detected in the southeastern part of the state since June 22.In neighboring Ohio, Lucas County has reported 306 cases, while northwest Ohio has recorded more than 500 infections, AP cites.Source of infection still unknownHealth officials are yet to identify the source of the infections. "There is clearly a linked outbreak happening right now," Michigan chief medical executive Dr Natasha Bagdasarian told Th