Antimicrobial resistance and genetic lineages of faecal enterococci of wild birds: Emergence of vanA and vanB2 harbouring Enterococcus faecalis

International Journal of Antimicrobial Agents
Houssem Ben YahiaKarim Ben Slama

Abstract

Migrating birds have been implicated in pathogen dissemination over long distances. The lack of data on the intestinal microbiota of birds makes these animals a promising path in order to understand their potential role in the transmission of antibiotic-resistant bacteria. This study aimed to investigate the diversity of enterococcal species, and to analyse the antimicrobial-resistant phenotypes/genotypes, as well as the genetic lineages of isolates obtained from faecal and pellet samples of colonial wild birds in Tunisia. Seventy-nine enterococci were recovered from 150 wild birds, after inoculation of samples in Slanetz-Bartley agar, and were identified as E. faecalis (n = 53), E. faecium (n = 19) and E. casseliflavus (n = 7). Antimicrobial susceptibility was tested, and the following rates of resistance were found: tetracycline (46.8%); erythromycin (34.2%); chloramphenicol (8.8%); gentamicin and streptomycin (2.5-3.8%); ciprofloxacin, trimethoprim-sulfamethoxazole and kanamycin (12.7-21%); and ampicillin and linezolid (0%). The tet(M), tet(L), erm(B), erm(C), aac(6')-Ie-aph(2″)-Ia and cat genes were detected in most tetracycline-, erythromycin-, gentamicin- and chloramphenicol-resistant enterococci, respectively. Three vanc...Continue Reading

Citations

Oct 31, 2019·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Marta DecBarbara Turchi
Aug 3, 2019·Scientific Reports·Dagmara Stępień-PyśniakRenata Urban-Chmiel
Jun 24, 2020·International Journal of Molecular Sciences·Beatriz SánchezMagdalena Martínez-Cañamero

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