Serogroups of Escherichia coli from Drinking Water |
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Authors: | P W Ramteke Suman Tewari |
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Institution: | (1) Department of Biotechnology, Allahabad Agricultural Institute (Deemed University), Allahabad, Uttar pradesh, 211 007, India |
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Abstract: | Fifty seven isolates of thermotolerant E. coli were recovered from 188 drinking water sources, 45 (78.9%) were typable of which 15 (26.3%) were pathogenic serotypes. Pathogenic
serogroup obtained were 04 (Uropathogenic E. coli, UPEC), 025 (Enterotoxigenic E. coli, ETEC), 086 (Enteropathogenic E. coli, EPEC), 0103 (Shiga-toxin producing E. coli, STEC), 0157 (Shiga-toxin producing E. coli, STEC), 08 (Enterotoxigenic E. coli, ETEC) and 0113 (Shiga-toxin producing E. coli, STEC). All the pathogenic serotypes showed resistance to bacitracin and multiple heavy metal ions. Resistance to streptomycin
and co-trimazole was detected in two strains whereas resistance to cephaloridine, polymixin-B and ampicillin was detected
in one strain each. Transfer of resistances to drugs and metallic ions was observed in 9 out of 12 strains studied. Resistances
to bacitracin were transferred in all nine strains. Among heavy metals resistance to As3+ followed by Cr6+ were transferred more frequently. |
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Keywords: | Thermotolerant E coli UPEC ETEC EPEC STEC Antibiotic resistance |
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