Faecal carriage of verocytotoxin-producing Escherichia coli O157 in cattle and sheep at slaughter in Great Britain. - Paiba GA; Gibbens JC; Pascoe SJ; Wilesmith JW; Kidd SA; Byrne C; Ryan JB; Smith RP; McLaren M; Futter RJ; Kay AC; Jones YE; et al. (The Veterinary record, 2002)