Lettuce at Taco Bell in 5 U.S. states confirmed as source of a diarrhea-causing parasite outbreak CTV NewsU.S. health authorities say lettuce served at Taco Bell locations is source of diarrhea-causing outbreak CBCTaco Bell lettuce, cases and more cyclosporiasis outbreak updates USA TodayTaco Bell removes lettuce from menu in US after links to explosive diarrhoea BBCParasitic Outbreak Linked to Taylor Farms Lettuce Supplied to Taco Bell WSJ