Untreated HWWs Emerged as Hotpots for ARGs
- 1 March 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Bulletin of Environmental Contamination and Toxicology
- Vol. 104 (3), 386-392
- https://doi.org/10.1007/s00128-020-02792-2
Abstract
Hospital wastewaters (HWWs) are reported to be hotspots for antibiotics and antibiotic-resistant bacteria. However, limited information involves the impact of these effluents on dissemination of antibiotic-resistance genes (ARGs). In this study, therefore, seasonally collected HWWs were monitored for overall bacterial load and seven ARGs aadA, tetA, cmlA, sul1, qnrS, ermB and bla (CTX-M )by using quantitative polymerase chain reaction method. Overall bacterial 16S rRNA copy number was found to be the lowest in winter with 10(3 )copy number/mL, while the highest copy number, with 10(5 )copy number/mL, was observed in both summer and spring. All hospitals tested displayed similar seasonal ARG copy number profile of aadA > tetA > cmlA approximate to sul1 > ermB approximate to qnrS > bla (CTX-M). The results indicated that untreated HWWs were hotspots for ARGs and required attention before discharging into public sewer.Keywords
Funding Information
- Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (117Y245)
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