Taco Bell investigated as possible source of cyclosporiasis parasite outbreak

State and federal health agencies are investigating if Taco Bell played a role in a widespread cyclosporiasis outbreak. 

On Monday, the Michigan Department of Health and Human Services (MDHHS) said that a potential source of the cyclosporiasis outbreak is lettuce or salad greens. Taco Bell is being looked at as one possible source of the contaminated vegetables, the Washington Post reported, citing unnamed sources. 

Cyclospora is a parasite that infects the intestines and causes watery diarrhea, nausea, and stomach cramps. Symptoms can take up to two weeks after exposure to develop. Typically, Michigan only records 40 to 50 cases of cyclosporiasis annually, but there have been 2,640 cases reported as of Monday. 

Local media have reported that notices were placed at Taco Bell locations in Detroit, stating that the chain isn't able to sell lettuce, cilantro onion, pico de gallo, and guacamole due to a nationwide recall. Taco Bell Corp. said it's monitoring the situation and working with health authorities to protect customers. 

“The health and safety of our guests is our top priority. Public health officials have not confirmed a link to Taco Bell or any specific ingredient, supplier, restaurant or retailer. While authorities continue their broader review, Taco Bell has voluntarily and temporarily removed limited ingredients at select restaurants as a precautionary measure," the company said.