The FSA says it is "confident" that lettuce leaves are the outbreak's source. An E. coli outbreak that has sickened more than 200 people has been traced to lettuce. The FSA told Sky News it is "too early to determine" how the lettuce leaves may have become contaminated - but it is "confident" that is the source. Three companies have recalled sandwiches and wraps sold at supermarkets as a precautionary measure. If farmers use manure to fertilize a field, they have to wait at least a year before they can plant lettuce there. They must also test the water they use for irrigation to see if E. coli is present. The FSA has not revealed whether the lettuce came from a UK-based farm or was imported from abroad. The outbreak of 211 cases of E. coli has been confirmed as of 11 June - and at least 67 people have required hospital treatment. @ https://news.sky.com/story/amp/e-coli-lettuce-believed-to-be-source-of-outbreak-so-how-safe-are-we-to-eat-food-item-and-does-washing-reduce-risk-13154809