Health officials identify source of US explosive diarrhoea outbreak BBCLettuce Supplier Linked to Cyclospora Outbreak Is a Global Salad Giant WSJThe source of a diarrhea-causing outbreak in the U.S. has been found. Now what? CBCFDA says sample of iceberg lettuce supplied by Taylor Farms tested positive for US parasite outbreak ReutersCyclospora: iceberg lettuce recalled in 27 states and more products may follow The Guardian