Food Safety Watch: Public Health England is investigating a national outbreak of Verocytotoxigenic E. coli (VTEC) serotype O157 phage type 8 vero-toxin type 2a infection that may be associated with consumption of pre-packed salad.

Genetic analysis of VTEC O157 isolates from people affected in the outbreak has identified 38 confirmed cases with one further probable case and four more awaiting test results. The confirmed cases all became ill between 29 July and 12 August and are widely distributed across England, with one case in Wales, but none in Scotland.

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