U.S. health officials have expanded their investigation into a cyclosporiasis outbreak linked to iceberg lettuce imported from central Mexico, following new cases reported in three additional states. The Food and Drug Administration (FDA) and Centers for Disease Control and Prevention (CDC) announced on August 27 that the outbreak now spans 20 states.

The contaminated lettuce, supplied by Taylor Farms’ operations in Mexico, has been associated primarily with iceberg lettuce served at Taco Bell restaurants. To date, the outbreak has resulted in 11,458 confirmed cases and 495 hospitalizations nationwide.

The most recent developments include the addition of Georgia, Tennessee, and Texas to the list of affected states, marking an expansion from the previously reported 17 states. Among the hardest hit, Michigan has recorded the highest number of cases and the only two deaths attributed to the outbreak. Both fatalities occurred in individuals with significant pre-existing health conditions. The Michigan Department of Health reported 14,510 cyclosporiasis cases linked to the outbreak, reflecting an increase of 233 cases, or approximately 2%, since the prior week’s update.

Cyclosporiasis is an intestinal illness caused by the parasite Cyclospora cayetanensis, which spreads through contaminated food or water. Symptoms generally include diarrhea, fatigue, weight loss, and abdominal cramping. While most healthy individuals recover with proper treatment, severe cases can lead to hospitalization, particularly among vulnerable populations.

Investigators continue to work alongside Mexican suppliers and U.S. regulatory agencies to trace the source of contamination and prevent further illnesses. Consumers are advised to follow safe food handling practices and consult healthcare providers if they exhibit symptoms consistent with cyclosporiasis.