Detection and characterization of shiga toxin producing Escherichia coli, Salmonella spp., and Yersinia strains from human, animal, and food samples in San Luis, Argentina

Authors
Favier, Gabriela Isabel; Lucero Estrada, Cecilia Stella Marys; Cortiñas, Teresa I.; Escudero, María Esther
Publication Year
2014
Language
English
Format
article
Status
Published version
Description
Shiga toxin producing Escherichia coli (STEC), Salmonella spp., and Yersinia species was investigated in humans, animals, and foods in San Luis, Argentina. A total of 453 samples were analyzed by culture and PCR. The antimicrobial susceptibility of all the strains was studied, the genomic relationships among isolates of the same species were determined by PFGE, and the potencial virulence of Y. enterocolitica strains was analyzed. Yersinia species showed higher prevalence (9/453, 2.0%, 95% CI, 0.7–3.3%) than STEC (4/453, 0.9%, 95% CI, 0–1.8%) and Salmonella spp. (3/453, 0.7%, 95% CI, 0–1.5%). Y. enterocolitica and Y. intermedia were isolated from chicken carcasses (6/80, 7.5%, 95% CI, 1.5–13.5%) and porcine skin and bones (3/10, 30%, 95% CI, 0–65%). One STEC strain was recovered from human feces (1/70, 1.4%, 95% CI, 0–4.2%) and STEC stx1/stx2 genes were detected in bovine stools (3/129, 2.3%, 95% CI, 0–5.0%). S. Typhimurium was isolated from human feces (1/70, 1.4%, 95% CI, 0–4.2%) while one S. Newport and two S. Gaminara strains were recovered from one wild boar (1/3, 33%, 95% CI, 0–99%). The knowledge of prevalence and characteristics of these enteropathogens in our region would allow public health services to take adequate preventive measures.
Fil: Favier, Gabriela Isabel. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Area Microbiologia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lucero Estrada, Cecilia Stella Marys. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Area Microbiologia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cortiñas, Teresa I. . Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Area Microbiologia; Argentina
Fil: Escudero, María Esther. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Area Microbiologia; Argentina
Subject
DETECTION
CHARACTERIZATION
STEC
SALMONELLA
YERSINIA
FOOD
Biología Celular, Microbiología
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Open access
License
https://creativecommons.org/licenses/by/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/14498