This risk profile provides current scientific information relevant to this issue, i.e. whether certain
enterohemorrhagic Shiga toxin producing serotypes of E. coli, including non-O157 serotypes, can
be considered as adulterants, analogous to E. coli O157, within the meaning of the FMIA.
When considering non-O157 STEC, first, the term “enterohemorrhagic Shiga toxin producing
serotypes of E. coli, including non-O157 serotypes” needed to be more clearly defined. Second,
FSIS wanted to determine if this group of organisms was likely to be present in beef produced by
establishments under its jurisdiction. Third, FSIS sought to examine the claim that this group of
organisms represented an unusual and urgent food safety problem comparable to that posed by E.