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Research Journal of Microbiology
Year: 2006  |  Volume: 1  |  Issue: 5  |  Page No.: 458 - 462

Prevalence of Thermotolerant Escherichia coli in Drinking Water and its Multidrug Resistance

D.H. Tambekar, N.B. Hirulkar, M.V. Kalikar, Y.S. Patil and S.R.Gulhane    

Abstract: Waterborne diseases are among the leading causes of morbidity and mortality in developing countries and every year around 2.2 million people die due to basic hygiene related diseases like coliform diarrhoea. The total 1000 sample from various sources such as tube wells (340), open wells (340) and hotels and restaurants (320) were analyzed for the presence of Escherichia coli contamination in drinking water and recorded 425 water samples contaminated with total coliform by MPN technique. Out of them 85 strains of thermotolerant Escherichia coli 51 (60%) from open well, 23 (32%) from tube well and 11 (13%) from hotels and restaurants were isolated and identified. These isolates showed maximum resistance to ofloxacin followed by novobiocin, cefdinir and ciprofloxacin. The azithromycin; gentamycin, amikacin, chloramphenicol, co-trimoxazole and tetracycline were the most effective while the ofloxacin, novobiocin, cefdinir and ciprofloxacin were the least effective against the E. coli isolated strains. Thus findings recommended that amikacin and azithromycin, gentamicin, chloramphenicol and tetracyclin are the best choice of drugs, while the ofloxacin, cefdinir, ciprofloxacin and novobiocin antibiotics should be avoided against E. coli diarrhoeal infections in the region.

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