correspondent has the latest. i recall of this size is unusual. almost every major supermarket chain is removing products from their shelves as the hunt for the source of this outbreak continues. e. coli is a bacterial infection which can cause stomach cramps, sickness, and fever. 211 cases concerned so far all linked in some way. to date, there have been 147 cases in england, 27 in wales, 35 in scotland and two in northern ireland, though it s thought those infections were acquired in england. in total, at least 67 people have needed hospital treatment. if you have really painful stomach ache or bloody diarrhoea, those are the things that should ring the alarm bells, seek medical advice. investigators say they ve narrowed down the cause of the infection to a type of lettuce leaf and are working to identify the supplier orfarm involved. two food manufacturers have already withdrawn products which may contain the same leaf, while a third company could be added as soon as today