Occurrence and antibiogram of bacteria isolated from some sachet drinking water brands sold in Gombe metropolis, Gombe State, Nigeria

Document Type : Original Article

Authors

1 Microbiology Department, Faculty of Science, Gombe State University, Gombe State, Nigeria

2 Department of Microbiology, Faculty of Science, 760214 Tudun Wada Gombe, Gombe State, Nigeria

3 Department of Microbiology, Faculty of Science, Gombe State University, Gombe State, Nigeria

Abstract

Background: Diseases contracted through consuming contaminated water present health challenges globally, hence this study aimed to assess occurrence and antibiogram of bacteria isolated from various brands of sachet drinking water sold in Gombe metropolis. Methods: Twenty brands of samples were collected randomly, serially diluted, and cultured on nutrient agar (NA). Isolates were identified morphologically and biochemically, with antibiogram determined using Clinical and Laboratory Standards Institute (CLSI) guidelines. Results: All the 20 samples produced positive bacterial growths with counts ranging from 1.0x103 to 9.8x103 CFU/ml with identified colonies of Escherichia coli (E. coli), Staphylococcus aureus ( S. aureus), Pseudomonas aeruginosa (P. aeruginosa), and Klebsiella pneumoniae (K. pneumoniae). Antibiogram revealed the isolates were all resistant to augmentin, cefixime, cefuroxime and ceftazidime, but E. coli and S. aureus were also resistant to gentamicin. Conclusion: The samples were contaminated with potentially pathogenic bacteria that were resistant to some antibiotics. Hence there is need for enforcement of drinking water standards to avoid consequences of unsafe drinking water, thus improving the health of the population.

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