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Antimicrobial Susceptibility among Urban Wastewater and Wild Shellfish Isolates of Non-O1/Non-O139 Vibrio Cholerae from La Rance Estuary (Brittany, France)

Abstract : The early 2000s marked the end of the Golden age of the antibiotics and the beginning of the awareness on the potential threat to human health due to the dissemination of antimicrobial resistance. As a base-line study, we investigated the antimicrobial susceptibility of 99 strains of non-O1/non-O139 Vibrio cholerae isolated fromwastewater and shellfish in 2000/2001 within La Rance estuary (Brittany, France). All isolates were susceptible to amoxicillin-clavulanic acid, cefotaxime, imipenem, chloramphenicol, nalidixic acid, ciprofloxacin, norfloxacin, amikacin, gentamicin, tetracycline, doxycycline, trimethoprim-sulfamethoxazole, and erythromycin. The only resistances were to streptomycin, sulfonamides and ampicillin: 54.6% of the isolates had acquired resistance to at least one antimicrobial agent among them and only six isolates from cockles were multidrug resistant. On the basis of the distribution of a limited selection of resistance associated genes, our study shows that V. cholerae can constitute an environmental reservoir for these genes. However, none of our isolates harbored integron. This result casts doubt on the capacity of non-O1/non-O139 V. cholerae to acquire resistance-associated genes in such context, and on its potential role of indicator of the dissemination of antimicrobial resistance in the aquatic environment.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01616065
Contributor : Xavier Chard-Hutchinson <>
Submitted on : Friday, October 13, 2017 - 9:52:19 AM
Last modification on : Friday, November 29, 2019 - 1:46:50 AM

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Sandrine Baron, Emeline Larvor, Severine Chevalier, Eric Jouy, Isabelle Kempf, et al.. Antimicrobial Susceptibility among Urban Wastewater and Wild Shellfish Isolates of Non-O1/Non-O139 Vibrio Cholerae from La Rance Estuary (Brittany, France). Frontiers in Microbiology, Frontiers Media, 2017, 8, pp.1637. ⟨10.3389/fmicb.2017.01637⟩. ⟨hal-01616065⟩

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