Bags for Death?
Tests on shoppers’ bags revealed half contained traces of E.coli, a lethal toxin which killed 26 people in Scotland in 1996 in one of the worlds worst food poisoning outbreaks.
Scientists also found many were contaminated with salmonella.
But while they are better for the environment, the new research suggests they could be harmful to health if not cleaned regularly.
Professor Charles Gerba, who led the study said: “Our findings suggest a serious threat to public health, especially from bacteria such as E.coli, which were detected in half of the bags sampled.
“Consumers are alarmingly unaware of these risks and the critical need to sanitise their bags on a weekly basis.”
A poll revealed 97 per cent of shoppers who used eco-friendly bags never washed or bleached them.