Predominance of genetically diverse ESBL Escherichia coli identified in resistance mapping of Vembanad Lake, the largest fresh-cum-brackishwater lake of India

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dc.contributor.authorVaiyapuri, Murugadas
dc.contributor.authorAnna Sherin Pulithara Sebastian
dc.contributor.authorGeorge, Iris
dc.contributor.authorSandhya Soolamkandath Variem
dc.contributor.authorVasudevan, Radhakrishnan Nair
dc.contributor.authorC.G., Joshy,
dc.contributor.authorBadireddy, Madhusudana Rao
dc.contributor.authorSivam, Visnuvinayagam
dc.contributor.authorPeeralil, Shaheer
dc.contributor.authorSanjeev, Devi
dc.contributor.authorT., Muthulakshmi
dc.contributor.authorAlbert Moses, Sheela
dc.contributor.authorC.N., Ravishankar
dc.contributor.authorMothadaka, Mukteswar Prasad
dc.date.accessioned2024-05-14T05:45:18Z
dc.date.available2024-05-14T05:45:18Z
dc.date.issued2021-07-30
dc.description.abstractAntimicrobial resistance (AMR) burden in Escherichia coli along the 90 km stretch of Vembanad Lake, Kerala, India, was assessed. Seventy-seven percent of water samples drawn from 35 different stations of the lake harbored E. coli. Antibiotic susceptibility test performed on 116 E. coli isolates revealed resistance to ≥ one antibiotic with 39 AMR profiles in 81%, multidrug resistance in 30%, and extended spectrum β-lactamase (ESBL) producers in 32%. Of all the 15 antibiotics tested, the probability of isolating cefotaxime-resistant E. coli was the highest (P ≤ 0.05) in the lake. Genetically diverse ESBL types, namely blaTEM-116, blaCTX-M -152, blaCTX-M -27, blaCTX-M -55, blaCTX-M-205, and blaSHV-27, were identified in the lake. This is probably the first report in India for the presence of blaCTX-M-205 (blaCTX-M-group 2) in the Vembanad Lake. ST11439 and single and double loci variants of ST443 and ST4533 were identified in multilocus sequence typing (MLST). Inc plasmids (B/O, F, W, I1, FIIA, HI1, P-1α, K/B, and N) identified in the lake evidences the resistance transmission potential of the E. coli isolated from the lake. Molecular typing (ERIC-PCR, MLST, and PBRT) delineated diverse E. coli, both between and within the sampling stations. Low multiple antibiotic resistance index (averageMAR< 0.2) indicates a lower risk of the lake to the human population, but the occurrence of genetically diverse ESBL E. coli in the Vembanad Lake signals health hazards and necessitates pragmatic control measures.
dc.identifier.citationEnvironmental Science and Pollution Research (2021) 28:66206–66222 https://doi.org/10.1007/s11356-021-15110-y
dc.identifier.issn0944-1344
dc.identifier.urihttp://10.10.10.7:82/handle/123456789/6302
dc.language.isoen
dc.publisherSpringer
dc.titlePredominance of genetically diverse ESBL Escherichia coli identified in resistance mapping of Vembanad Lake, the largest fresh-cum-brackishwater lake of India
dc.typeArticle
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