Michigan health officials say that they may have identified the possible source behind one of the largest Cyclosporiasis outbreaks the state has ever recorded. Thousands of people were sickened by a parasitic infection that can cause severe, watery, or even “explosive” diarrhea. Source Behind Cyclospora Outbreak Traced On July 13, the Michigan Department of Health and Human Services (MDHHS) announced preliminary findings from its investigation point to lettuce or other salad greens as the possible source of Cyclospora outbreak. However, officials stressed that the investigation is in progress, and no specific product, grower, distributor, or supplier has yet been identified for certain. Health officials also interviewed more than 1,000 patients to identify common exposures. Early analysis also repeatedly identified lettuce and salad greens as foods consumed before illness, prompting the state to issue precautionary guidance while the investigation continues. "Although we do not have a definite product identified as the source of the outbreak, we want to let Michiganders know what we have learned so far so they can take steps to protect their families," said Dr. Natasha Bagdasarian, Michigan's chief medical executive, in a state statement. Also read: As Cyclospora Cases Surge In The US, Expert Explains Why India's Monsoon Raises Risk Of The Parasitic Infection Cyclospora Cases Continue To Surge The outbreak has continued to expand at an extraordinary pace since late June. As of July 13, Michigan reported 2,640 cases of Cyclosporiasis, with 44 hospitalizations. No deaths have been reported so far. The number represents a dramatic increase from the state's usual annual number, which is around 40 to 50 cases. Preventing Cyclospora Cyclospora is a parasite that infects people after they consume food or water contaminated with human feces containing the parasite's eggs (oocysts). Although the illness is usually not life-threatening, it can cause prolonged diarrhea, stomach cramps, nausea, fatigue, bloating, and weight loss. According to recent reports, fresh produce like salad greens and lettuce are being considered the most common source of infection, though contaminated water can also spread the parasite. Also read: Explosive Diarrhea Parasite Spreads Across US: Why CDC Is Unable To Find The Source? Health officials have advised people to avoid fresh produce. Previous Cyclospora outbreaks in the US have frequently been linked to imported fresh produce, including: BasilCilantroMesclun lettuceRaspberriesSnow peasHow To Clean Fresh Produce Safely? While washing produce cannot eliminate all risks, experts say it can reduce contamination. They advised washing fruits and vegetables thoroughly under clean running water and washing hands before and after handling fresh produce. According to the Michigan Department of Health and Human Services, cooking produce whenever possible during an active outbreak is crucial, as heating food to at least 158°F (70°C) kills Cyclospora. For specific produce, it suggested: Cilantro and basil: Separate the leaves and rinse each thoroughly under running water.Green onions: Trim off the roots, remove the outer layer, and rinse well.Snow peas: Rub the surface gently while washing under running water.Raspberries: Because of their delicate, uneven surface, raspberries are difficult to clean thoroughly. Cooking them in pies or jams is safer. Freezing may reduce the number of parasites but is unlikely to eliminate them completely.Leafy greens: If possible, choose whole heads of lettuce instead of bagged salad mixes. Discard the outer leaves and wash the remaining leaves under running water before eating.