Role of house flies in the ecology of Enterococcus faecalis from wastewater treatment facilities

Microbial Ecology
C W DoudL Zurek

Abstract

Enterococci are important nosocomial pathogens, with Enterococcus faecalis most commonly responsible for human infections. In this study, we used several measures to test the hypothesis that house flies, Musca domestica (L.), acquire and disseminate antibiotic-resistant and potentially virulent E. faecalis from wastewater treatment facilities (WWTF) to the surrounding urban environment. House flies and sludge from four WWTF (1-4) as well as house flies from three urban sites close to WWTF-1 were collected and cultured for enterococci. Enterococci were identified, quantified, screened for antibiotic resistance and virulence traits, and assessed for clonality. Of the 11 antibiotics tested, E. faecalis was most commonly resistant to tetracycline, doxycycline, streptomycin, gentamicin, and erythromycin, and these traits were intra-species horizontally transferrable by in vitro conjugation. Profiles of E. faecalis (prevalence, antibiotic resistance, and virulence traits) from each of WWTF sludge and associated house flies were similar, indicating that flies successfully acquired these bacteria from this substrate. The greatest number of E. faecalis with antibiotic resistance and virulence factors (i.e., gelatinase, cytolysin, entero...Continue Reading

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Citations

Mar 13, 2014·Journal of Medical Entomology·Anuradha GhoshLudek Zurek
Aug 8, 2015·Letters in Applied Microbiology·M EnayatiM Talebi
May 15, 2015·PloS One·Kim Y HungAlec C Gerry
Apr 8, 2014·Applied and Environmental Microbiology·Ludek Zurek, Anuradha Ghosh
Sep 4, 2015·Journal of Medical Entomology·Kristina FriesenDavid B Taylor
Jun 27, 2019·Microorganisms·Susanne A KraemerGabriel G Perron
Jul 28, 2018·Microbiology Spectrum·Carmen TorresTeresa M Coque

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