Michigan, the hardest-hit state in the ongoing nationwide cyclosporiasis outbreak, has reported nearly 10,000 cases of the intestinal illness, which can cause severe, often "explosive," diarrhea, according to state health officials.So far, the state has recorded 160 hospitalizations, with no deaths reported.According to the US Centers for Disease Control and Prevention (CDC), 6,707 laboratory-confirmed domestic cases of cyclosporiasis have been reported since May 1.The agency also said it is tracking more than 11,500 additional suspected cases that have not yet been laboratory confirmed or remain under investigation. Many of these reports have come from Michigan and Ohio.What Did the FDA Probe Reveal?A US Food and Drug Administration (FDA) investigation has linked part of the outbreak to iceberg lettuce served at Taco Bell restaurants and supplied through Taylor Farms operations in central Mexico.The FDA is continuing to investigate other potential sources of contamination. Taco Bell has stopped serving the affected lettuce, while Taylor Farms has voluntarily recalled dozens of iceberg lettuce products distributed across 27 states. The company also said it will no longer source iceberg lettuce from central Mexico for the remainder of the growing season.The recalled lettuce has been linked to illnesses in five states—Indiana, Kentucky, Michigan, Ohio, and West Virginia. However, investigators have not yet determined how many illnesses are directly connected to the recalled products.Separately, the FDA is investigating another Cyclospora outbreak that is unrelated to the lettuce-linked cases. The second outbreak has sickened 72 people and has been traced to an unidentified food item. The agency said the source has "not yet been identified."Could It Be More Than Lettuce?Former CDC Director Robert Redfield told media that the US government may consider ending produce sourcing from central Mexico. He also suggested the outbreak may involve more than lettuce.Officials are also investigating whether parsley and cilantro, in addition to lettuce, could be associated with the outbreak. The investigation is ongoing.How to Check If Your Lettuce Is SafeThe FDA advises consumers to check salad and lettuce products purchased during the past week to determine whether they were sourced from Taylor Farms de Mexico in Guanajuato, Mexico.The recalled retail products include:12-ounce and 24-ounce Iceberg Salad with best-by dates between July 18 and Aug. 38-ounce and 16-ounce Shredded Lettuce with best-by dates between July 18 and Aug. 3Consumers who purchased these products should throw them away or return them to the store where they were bought.An additional 33 recalled lettuce products were distributed to restaurants and other food-service businesses and are unlikely to be found in home refrigerators. A complete list of recalled products is available on the FDA website.At this time, no other lettuce varieties—including romaine or butter lettuce—have been linked to the outbreak, even if distributed by Taylor Farms. The company told Newsweek that, aside from the recalled iceberg lettuce, "no other Taylor Fresh Foods products across the country are impacted." How To Reduce Your RiskHealth officials recommend:Avoid eating shredded iceberg lettuce linked to the recall.Wash all fresh fruits and vegetables thoroughly under clean running water, even if they are labeled pre-washed.Follow safe food-handling practices.Stay updated on food recalls and outbreak alerts.Contact a healthcare provider if symptoms develop.Experts also recommend choosing whole heads of lettuce instead of bagged greens. Remove the outer leaves, wash the inner leaves thoroughly under running water, and cook produce whenever possible, as heat is the most effective way to kill Cyclospora.