[Antimicrobial susceptibility of animal and food isolates of Salmonella enterica].

Background: Bacterial resistance to one or more antimicrobiak is worrisome.
Aim: To determine the susceptibility to antimicrobials of Salmonella entérica isolates from animáis and food, from the Laboratory of Veterinary Microbiology at the University of Concepción.
Material and Methods: The samples were isolated according to traditional microbiological methods standardized protocols. Resistance was determined by the Kirby-Bauer method and minimal inhibitory concentration (MIC), following Clinical and Laboratory Standards Institute recommendations (2008).
Results: Nine serotypes were identified among the 68 isolates. Strains were resistant to one or more antibiotics and 11 patterns of resistance were identified. Multidrug resistance (MDR) was observed in 20.5% of the strains tested. The most common was Oxytetracycline resistance (69.1%). Infood, the predominant serotype was S. Derby (2.9%) and S. Senftenberg (2.9%), which is commonly found infood intended for animal consumption. In samples of animal origin, the predominant serotypes were S. infantis (33.8%) and S. Group E (3.9;-;-) (23.5%).
Conclusions: The frequeney of resistance found and the impending risk that these strains could reach humans through the food chain, should prompt a follow-up study of this pathogen.