Federal regulations permit the applicant/employee to request the split specimen that was collected at the time of the original specimen be sent to another laboratory for testing. This request should be made to the MRO within 72 hours of the employee being notified of the positive test result.
Shiga toxin-producing E. coli(STEC), also called verotoxinogenic E. coli, usually do not cause disease inanimals but may cause watery diarrhoea, haemorrhagic colitis, and/orhaemolytic uraemic syndrome in humans. Zoonotic STEC include the O157:H7strains and, with increasing frequency, certain non-O157 strains.
Both the O145 and O104 strains can cause hemolytic-uremic syndrome; the former strain shown to account for 2% to 51% of known HUS cases; an estimated 56% of such cases are caused by O145 and 14% by other EHEC strains. EHECs that induce bloody diarrhea lead to HUS in 10% of cases.