Taco Bell has taken many ingredients off its menu due to the spread of a parasite that's mostly found in produce. File Photo courtesy of Taco Bell

July 9 (UPI) -- Some Taco Bell locations have removed ingredients from their menus amid the ongoing cyclosporiasis outbreak.

Some locations have added signage saying they have stopped serving lettuce, pico de gallo, guacamole, cilantro and onion as cyclospora continues to plague the United States.

It's unclear if any Taco Bell customers have gotten sick from the parasite.

The parasite is called Cyclospora cayetanensis and can cause cyclosporiasis, which the U.S. Centers for Disease Control and Prevention says causes "watery diarrhea" and "frequent and sometimes explosive bowel movements" that can last for a month or more.