Parasitic infection causing ‘explosive’ stomach illness exceeds 1,000 cases in northern state

Cases of cyclosporiasis infections are rising across America, with more than 1,000 people diagnosed in Michigan and more than 500 in Ohio.

This is the largest outbreak of its kind in Michigan's history and one of the country’s largest in years, according to the Associated Press.

The parasitic infection can cause weeks of watery diarrhea. The source of the infections has not been identified and no deaths have been reported.

MYSTERY PARASITE LEAVES AMERICANS BATTLING ‘EXPLOSIVE' ILLNESS AS CDC INVESTIGATES

Michigan officials announced the outbreak last week following the identification of more than 170 cases since June 22 in the southeastern part of the state. Typically, only about 50 cases are identified in Michigan each year, according to AP.

Similar illnesses have been reported in 28 other states, including neighboring Ohio, where diagnoses have popped up across the Michigan border.

Cases have been climbing since the CDC identified an uptick in infections in mid-June, with illnesses now reported in dozens of states.

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Michigan has now reported more than 1,200 cases and at least 40 hospitalizations. In Ohio, northwest counties have identified more than 500 cases, including at least 306 in Lucas County, according to the latest available local figures.

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Texas has reported at least 48 cases, and illnesses have been identified in numerous other states as health officials investigate the source.

The hallmark symptom of a cyclospora infection is watery, often "explosive" diarrhea that can last for weeks or even months if left untreated, the CDC says.

Other symptoms include severe abdominal cramping, bloating, nausea, fatigue and significant weight loss.

The official outbreak season for the parasite runs from May 1 through Aug. 31, a window where warmer temperatures historically coincide with a spike in infections, according to the CDC.

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While the infection can sometimes clear up on its own, it frequently requires antibiotics. The CDC advises anyone experiencing symptoms of cyclosporiasis to contact a healthcare provider for testing and treatment.

The CDC, alongside the Food and Drug Administration and state health officials, is actively investigating several multi-state clusters, but they have yet to find a cause behind the spread.

Past infections have reportedly been linked to consuming contamined fruits or vegetables, or being exposed to contaminated irrigation water.

Fresh produce should be washed thoroughly before being eaten, although this may not eliminate the risk of infection, the AP noted.

Michigan officials recommend purchasing salad mixes or whole heads of lettuce instead of pre-washed, bagged lettuce. Remove two to three leaves from the outer layer of the lettuce head before washing and cook vegetables when possible.

Fox News Digital's Khloe Quill contributed to this report.