Sanitary status and water quality of some drinking water sources and antibiogram of Shiga toxin-producing Escherichia coli O157:H7 isolated from Shika, Zaria, Nigeria.

Autor: Obanor O; Department of Microbiology, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria., Afegbua SL; Department of Microbiology, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria., Ameh JB; Department of Microbiology, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Nigeria.
Jazyk: angličtina
Zdroj: International journal of environmental health research [Int J Environ Health Res] 2023 Dec; Vol. 33 (12), pp. 1604-1616. Date of Electronic Publication: 2022 Aug 19.
DOI: 10.1080/09603123.2022.2111409
Abstrakt: This study assessed the sanitary condition and quality of selected wells and boreholes in Shika, Zaria Nigeria. Fifty samples each were collected during the dry and wet seasons. This involved sanitary survey, water quality assessment, isolation and characterization of Shiga toxin-producing Escherichia coli O157:H7 (STEC) and, antibiogram assay. Based on the risk of contamination, wells (72%) had a high risk of contamination, while boreholes (44%) had low risk of contamination. Their physicochemical quality varied with season and location, and mean total coliform (TC) and faecal coliform (FC) were significantly lower in the dry season (p < 0.05). STEC were isolated from only wells with a prevalence of 4%, and exhibited a multidrug resistance pattern (amoxicillin, erythromycin and tetracycline). There was a strong positive correlation between sanitary status and water quality. The high- and very high-risk categories (wells) were strongly correlated with TC, FC, BOD, phosphate, turbidity and pH.              .
Databáze: MEDLINE
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