Public Health England (PHE) has issued a warning for people to thoroughly wash mixed salad leaves, following an E.Coli food poisoning outbreak in the UK.
151 people have been affected by the foodborne illness in Britain, leaving two dead.
To date there have been 144 cases reported in England, six in Wales and one in Scotland. 62 people have required hospital care.
PHE has said several of the victims were known to have eaten mixed salad, including rocket, before becoming unwell.
Test samples from those affected revealed the strain of E coli 0157 was potentially imported from the Mediterranean. Other food types have not been ruled out from investigations by PHE and the Food Standards Agency.
Dr Isabel Oliver, PHE’s director of field epidemiology, told the BBC: “All food sample results to date have been negative for E coli 0157, but it’s important to be aware that where food has been contaminated with E coli 0157, it is not always possible to identify the bacteria on food testing.
"As an additional precautionary measure, we have advised a small number of wholesalers to cease adding some imported rocket leaves to their mixed salad products pending further investigations."
The symptoms of E.coli poisoning include stomach aches, a high temperature, bloody diarrhoea and vomiting. Symptoms can start any time between one and 14 days after ingesting the bacteria and can last up to two weeks.