LANSING, Mich. (News 10/Gray News) - A parasitic infection called cyclosporiasis has sickened nearly 700 people across Michigan, state health officials said, with the case count quadrupling from roughly 170 in less than a week. State health officials said the outbreak is growing rapidly and they are working to bring it under control. The leading theory is that the infection is linked to contaminated fresh produce, though a specific source has not been identified.