Tesco and Asda are being sued by customers, including the family of an 11-year-old girl, who were left seriously ill after eating own-brand sandwiches linked to an outbreak of E coli.
The supermarkets face legal action after a child and adult were left in hospital. One person has been confirmed to have died and more than 120 others including a six-year-old have been hospitalised in the UK due to the bacteria.
