RT info:eu-repo/semantics/article T1 Prevalence and Characterisation of Multiresistant Bacterial Strains Isolated in Pigs from the Island of Tenerife A1 Rodríguez Álvarez, Cristobalina A1 Abreu, Rossana A1 Castro Hernández, Beatriz A1 Lecuona Fernández, María A1 González, Juan Carlos A1 Rodríguez Novo, Yurena María A1 Arias Rodríguez, María de los Ángeles A2 Obstetricia y GinecologíaPediatría, Medicina Preventiva y Salud Pública, Toxicología y Medicina Legal y Forense y Parasitología K1 Pig livestock K1 Antimicrobial resistance K1 One-health AB Background: Antibiotic-resistant bacteria can circulate among human and animal populations through direct contact with animals, as well as via food and the environment. The purpose ofthis study was to examine the prevalence and characterisation of multiresistant bacteria in pig samples.Methods: 224 samples of pig livestock were taken at the slaughterhouse on the island of Tenerife. Anasal and a rectal sample were collected from each pig. The presence of methicillin-resistant Staphylococcus aureus (MRSA), methicillin-resistant Staphylococcus coagulase-negative (MRCoNS), vancomycinresistant Enterococcus (VRE), extended-spectrum ß-lactamase-producing Enterobacteriaceae (BLEE),carbapenemase-producing Enterobacteriaceae (CPE), and colistin-resistant Enterobacteriaceae wasinvestigated. The resistance genes of the isolated bacteria were characterised by specific PCRs depending on the microorganism to be studied, and in vitro antimicrobial resistance was determined usingthe broth microdilution method (Vitek®2 system bioMérieux®, Nurtingen, Germany). Results: MRSAprevalence was 73.21% (164 isolates). MRCoNS prevalence was 9.8% (22 isolates), S. sciuri beingthe prevalent species. Six isolates presented a 2.7% prevalence of extended-spectrum ß-lactamaseproducing Escherichia coli (BLEE) in the CTX-M-1 group. No vancomycin-resistant Enterococcus(VRE), carbapenemase-producing Enterobacteriaceae (CRE), or colistin-resistant Enterobacteriaceae wereisolated. Conclusion: we found a high presence of multiresistant bacteria, suggesting the need forincreased control and surveillance of this type of strains in pig livestock and a better understandingof the possible transmission routes of these microorganisms through livestock products. SN 2306-7381 YR 2022 FD 2022 LK http://riull.ull.es/xmlui/handle/915/34819 UL http://riull.ull.es/xmlui/handle/915/34819 LA en DS Repositorio institucional de la Universidad de La Laguna RD 29-may-2024