At the time, no recall had been announced by the US Centers for Disease Control and Prevention, the Michigan Health Department or Taco Bell. Taco Bell said it acted quickly based on Michigan’s guidance. Taco Bell said at the time that authorities hadn’t confirmed a link to Taco Bell, an ingredient or a supplier. Related: Taco Bell Offers $1 Lettuce-Free Enchirito to Win Back Customers Post-ParasiteThe infection is caused by ingesting the microscopic cyclospora parasite, typically from contaminated food. Top photo: A Taco Bell restaurant in Pasadena, California.