ESBL-producing escherichia coli carrying CTX-M genes circulating among livestock, dogs, and wild mammals in small-scale farms of central Chile

Antibiotic-resistant bacteria of critical importance for global health such as extendedspectrum beta-lactamases-producing (ESBL)-Escherichia coli have been detected in livestock, dogs, and wildlife worldwide. However, the dynamics of ESBL-E. coli between these animals remains poorly understood, particularly in small-scale farms of low and middle-income countries where contact between species can be frequent. We compared the prevalence of fecal carriage of ESBL-E. coli among 332 livestock (207 cows, 15 pigs, 60 horses, 40 sheep, 6 goats, 4 chickens), 82 dogs, and wildlife including 131 European rabbits, 30 rodents, and 12 Andean foxes sharing territory in peri-urban localities of central Chile. The prevalence was lower in livestock (3.0%) and wildlife (0.5%) compared to dogs (24%). Among 47 ESBL-E. coli isolates recovered, CTX-M-group 1 was the main ESBL genotype identified, followed by CTX-M-groups 2, 9, 8, and 25. ERIC-PCR showed no cluster of E. coli clones by either host species nor locality. To our knowledge, this is the first report of ESBL-E. coli among sheep, cattle, dogs, and rodents of Chile, confirming their fecal carriage among domestic and wild animals in small-scale farms. The high prevalence of ESBL-E. coli in dogs encourages further investigation on their role as potential reservoirs of this bacteria in agricultural settings.

Notas

Indexación: Scopus.

Palabras clave

Antimicrobial resistance, blaCTX-M, Chile, Domestic animals, E. coli, Extended-spectrum beta-lactamases, Wildlife

Citación

Antibiotics Volume 10, Issue 5 May 2021 Article number 510

DOI

10.3390/antibiotics10050510

URI

https://repositorio.unab.cl/handle/ria/57963

Colecciones

Fac.CV - Artículos de Revista

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