As a consequence, there is potential for E. coli 0157:H7 populations to be distributed to the surface of equipment associated with slaughter and fabrication and the environment via aerosols or direct contact, and potentially contaminate unadulterated carcasses and fresh meat products (Barkocy-Gallagher et al., 2001; Gill and McGinnis, 2000; Gillet al., 2001; Gun et al., 2003; Tutenel et al., 2003).