Serotypes, virulence profiles and stx subtypes of Shigatoxigenic Escherichia coli isolated from chicken derived products

KRUGER A; ALONSO M; LUCCHESI PMA; PADOLA NL; SANZ M

REVISTA ARGENTINA DE MICROBIOLOGíA

ASOCIACION ARGENTINA MICROBIOLOGIA

Lugar: Buenos Aires; Año: 2016 vol. 48 p. 325 - 328

0325-7541

Shigatoxigenic Escherichia coli (STEC) is a foodborne pathogen that causes hemolyticuremic syndrome (HUS) and the consumption of chicken products has been related to some HUScases. We performed a non-selective isolation and characterization of STEC strains from retailchicken products. STEC isolates were characterized according to the presence of stx1, stx2,eae, saa and ehxA; stx subtypes and serotypes. Most of them carried stx2, showing subtypesassociated with severe human disease. Although reported in other avian species, the stx2f subtype was not detected. The isolates corresponded to different serotypes and some of them,such as O22:H8, O113:H21, O130:H11, O171:H2 and O178:H19, have also been identified amongSTEC isolated from patients suffering from diarrhea, hemorrhagic colitis, HUS and well as fromcattle. Considering the virulence profiles and serotypes identified, our results indicate that rawchicken products, especially hamburgers sold at butcheries, can be vehicles for high-risk STECstrains