Caracterização molecular de determinantes de resistência a antibióticos de Salmonella spp. isoladas de carne de frango in natura comercializados em mercados públicos de Recife - PE

Abstract

Salmonella is one of the main causative agents of foodborne infections. Salmonellosis becomes more dangerous when strains resistant to various antibiotics are found in food, especially in chickens, one of the main vehicles for transmitting this pathogen to humans. The aim of this study was to characterize the determinants of antibiotic resistance present in Salmonella spp. isolated from fresh chicken meat sold in public markets in the city of Recife. For that, 21 isolates of Salmonella spp. underwent phenotypic and molecular tests to assess susceptibility to antibiotics and to investigate determinants of resistance to [beta]-lactams and quinolones. The results obtained demonstrated the presence of three large clonal groups among bacterial isolates, in addition to the presence of genes encoding [beta]-lactamases and genes that confer resistance to quinolones. The spread of different polyclonal groups of Salmonella spp. MDR, in chicken carcasses, shown in this study, reinforces the need for effective controls to contain this microorganism, which in addition to being a risk to public health, is also responsible for considerable economic losses.