In Wales, John Tudor and Son, butchers, used the same machine to vacuum package raw and cooked meats. This led to an outbreak of E. coli O157:H7 in 44 schools in South Wales. The strain of E. coli 0157:H7 was unique to this outbreak. The inspection of the butcher shop revealed cross contamination potential, lack of attention to cleanliness, and falsification of safety records. In addition, the butcher shop had supplied the schools with meat that was green, smelly and undercooked. Prior to the outbreak, meat inspectors had known that the butcher was using the same machine for packaging uncooked and cooked meats, but decided that there was no imminent risk to human health.