Multiple antibiotic resistance indexing of Escherichia coli to identify high-risk sources of faecal contamination of water

Environmental Science and Pollution Research International
Yinka TitilawoAnthony Okoh

Abstract

We evaluated the antibiogram profile of Escherichia coli (n = 300) isolated from selected rivers in Osun State, Nigeria. The identities of the E. coli isolates were confirmed by polymerase chain reaction (PCR) technique. Susceptibility of the isolates to 20 antibiotics conventionally used in clinical cases was assessed in vitro by the standardized agar disc-diffusion method. All the isolates were susceptible to imipenem, meropenem, amikacin and gatilofloxacin. The isolates were variously susceptible to the other antibiotics as follows: ciprofloxacin (96 %), kanamycin (95 %), neomycin (92 %), streptomycin (84 %), chloramphenicol (73 %), nalidixic acid (66 %), nitrofurantoin (64 %), gentamycin (63 %), doxycycline (58 %), cefepime (57 %), tetracycline (49 %) and cephalothin (42 %). The multiple antibiotic resistance indexing ranged from 0.50 to 0.80 for all the sampling locations and exceeded the threshold value of 0.2, suggesting the origin of the isolates to be of high antimicrobial usage. Our findings signify an increase in the incidence of antimicrobial resistance of E. coli towards conventionally used antibiotics necessitating proper surveillance programmes towards the monitoring of antimicrobial resistance determinants in wa...Continue Reading

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Citations

Oct 5, 2016·Analytical and Bioanalytical Chemistry·Izabella J HidiJürgen Popp
Oct 29, 2017·Environmental Science and Pollution Research International·Pasqualina LaganàSanti Delia
Apr 5, 2021·Environmental Science and Pollution Research International·Ibukun M AdesiyanAnthony I Okoh
Sep 28, 2021·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Liyana Arachchilage Dinithi S De SilvaGang-Joon Heo
Dec 1, 2020·Journal of AOAC International·Patrícia Aleixa do NascimentoHérida Regina Nunes Salgado

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