Antibiotic Resistance of Heterotrophic Bacteria Isolated from Drinking Water – from the Water Source to the Consumers’ Taps

被引：0
作者：
Tsvetanova Z. [1 ]
Najdenski H. [2 ]
机构：
[1] Laboratory of Ecology of Pathogenic Bacteria, Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology, 78 Nikola Gabrovski Str., Veliko Tarnovo
[2] Laboratory of Bacterial Virulence, Resistance and New Antimicrobial Agents, Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology, Acad. Georgi Bonchev Str.,Bl. 26, Sofia
来源：
International Journal Bioautomation | 2023年 / 27卷 / 01期
关键词：
Antibiotic resistance; Drinking water; Drinking water distribution system; Heterotrophic bacteria;
D O I：
10.7546/IJBA.2023.27.1.000882
中图分类号：
学科分类号：
摘要：
The aim of this study was to determine the antibiotic resistance (ABR) phenotype of heterotrophic bacteria isolated from a Bulgarian drinking water supply system. The disc diffusion method of Kirby-Bauer was used in the bacterial isolates susceptibility testing toward 13 antibiotics from 7 classes. The ABR phenotype of 233 bacterial strains was determined and the influence of drinking water treatment and its transportation in the water supply network on the ABR prevalence was assessed. Among the isolates, the ABR incidence was low or medium, only tetracycline resistance was very rare, and no gentamicin resistance was detected; 42% of the isolates were resistant to one class of antibiotics, and 11% exhibited multiple resistance. Water chlorination has led to restructuring of the aquatic community and changes of the predominant ABR phenotypes. The ABR phenotype of the isolates differed depending on the drinking water sampling point demonstrating the local influence of the water supply network. Although there is no regulation of the ABR of drinking water, the data demonstrated prevalence of bacterial resistance to different antibiotics and need of a greater concern the microbiological water quality © 2023 by the authors. Licensee Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)
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页码：25 / 38
页数：13
相关论文
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