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... More than 18,000 confirmed and suspected Cyclospora cases have now been reported across 45 states, making it the largest outbreak of the parasite in US history, according to the Centers for Disease Control and Prevention. ...

infection have shot up to a total of 10,700.

Michigan has recorded more than twice as many cases as the second hardest-hit state, Ohio, which has reported around 4,000 confirmed infections.

And health experts are now urging residents to thoroughly wash and trim certain types of produce before eating them, with the majority of cases being diagnosed in and around Detroit.

While Michigan health officials have yet to identify the specific source of the state's outbreak, federal investigators have linked Cyclospora cases elsewhere in the US to shredded iceberg lettuce supplied by Taylor Farms, and sold through Taco Bell and other retailers. ...