Food manufacturers are recalling at least 60 types of pre-packed sandwiches, wraps and salads sold in major supermarkets because of possible contamination with E. coli. E. coli bacteria have not been detected in the products, but they are being recalled as a precaution. It is understood these are items containing salad leaves. Retailers involved include Aldi, Asda, Co-op and Morrisons. Some 211 people across the UK are known to be affected by E. coli currently - up from 113 last week. At least 67 people have been admitted to hospital, the UK Health Security Agency says. E. coli can sometimes contaminate the water or soil used to grow lettuce and other vegetables. Darren Whitby, head of incidents at the Food Standards Agency, said: “This is a complex investigation, and we have worked swiftly with the relevant businesses and the local authorities concerned to narrow down the wide range of foods consumed to a small number of salad leaf products that have been used in sandwiches and wraps."