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Ahmed W, Yusuf R, Hasan I, et al. Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh. Braz J Microbiol. 2013;44(1):97-103doi: 10.1590/S1517-83822013005000026.
Ahmed, W., Yusuf, R., Hasan, I., Ashraf, W., Goonetilleke, A., Toze, S., & Gardner, T. (2013). Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh. Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 44(1), 97-103. https://doi.org/10.1590/S1517-83822013005000026
Ahmed, W, et al. "Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh." Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] vol. 44,1 (2013): 97-103. doi: https://doi.org/10.1590/S1517-83822013005000026
Ahmed W, Yusuf R, Hasan I, Ashraf W, Goonetilleke A, Toze S, Gardner T. Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh. Braz J Microbiol. 2013 May 14;44(1):97-103. doi: 10.1590/S1517-83822013005000026. eCollection 2013. PMID: 24159289; PMCID: PMC3804183.
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Braz J Microbiol. 2013 May 14;44(1):97-103. doi: 10.1590/S1517-83822013005000026. eCollection 2013.

Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh.

Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]

W Ahmed, R Yusuf, I Hasan, W Ashraf, A Goonetilleke, S Toze, T Gardner

Affiliations

  1. CSIRO Land and Water, Ecosciences Precinct, Boggo Road, Brisbane, Australia. ; Department of Environment and Resource Management, Indooroopilly, Brisbane, Australia.

PMID: 24159289 PMCID: PMC3804183 DOI: 10.1590/S1517-83822013005000026

Abstract

Forty-six bottled water samples representing 16 brands from Dhaka, Bangladesh were tested for the numbers of total coliforms, fecal indicator bacteria (i.e., thermotolerant Escherichia coli and Enterococcus spp.) and potential bacterial pathogens (i.e., Aeromonas hydrophila, Pseudomonas aeruginosa, Salmonella spp., and Shigella spp.). Among the 16 brands tested, 14 (86%), ten (63%) and seven (44%) were positive for total coliforms, E. coil and Enterococcus spp., respectively. Additionally, a further nine (56%), eight (50%), six (37%), and four (25%) brands were PCR positive for A. hydrophila lip, P. aeruginosa ETA, Salmonella spp. invA, and Shigella spp. ipaH genes, respectively. The numbers of bacterial pathogens in bottled water samples ranged from 28 ± 12 to 600 ± 45 (A. hydrophila lip gene), 180 ± 40 to 900 ± 200 (Salmonella spp. invA gene), 180 ± 40 to 1,300 ± 400 (P. aeruginosa ETA gene) genomic units per L of water. Shigella spp. ipaH gene was not quantifiable. Discrepancies were observed in terms of the occurrence of fecal indicators and bacterial pathogens. No correlations were observed between fecal indicators numbers and presence/absence of A. hydrophila lip (p = 0.245), Salmonella spp. invA (p = 0.433), Shigella spp. ipaH gene (p = 0.078), and P. aeruginosa ETA (p = 0.059) genes. Our results suggest that microbiological quality of bottled waters sold in Dhaka, Bangladesh is highly variable. To protect public health, stringent quality control is recommended for the bottled water industry in Bangladesh.

Keywords: bacterial pathogens; bottled water; fecal indicator bacteria; public health risk; quantitative PCR

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