Presence of Strains of Escherichia coli and Staphylococcus aureus Detected in Drinking Water in Lalo, Benin: Assessment of Their Sensitivity to Commonly-Used Antibiotics

Benin has a high coverage rate of improved water sources. However, the vast majority of the population does not have access to safe drinking water at home. In the absence of a home piping system, the population devises methods to ensure that drinking water is available at home. As a result, water is extracted from its source, transported, and stored. This strategy is not without consequences because it favors microbiological contamination of the water. Unfortunately, the majority of antibiotics are resistant to bacteria that indicate fecal contamination. In terms of drinking water, fecal contamination indicator bacteria such as E. coli and enterococci are now antibiotic resistant; as a result, several infections can no longer be effectively treated. The purpose of this study is to determine the efficacy of commonly used antibiotics against the germs responsible for microbiological contamination of drinking water in the district of Ahomadégbé, municipality of Lalo, Benin. Antibiotic efficacy was tested on Escherichia coli and Staphylococcus aureus strains isolated from thirty-five (35) drinking water samples. In Escherichia coli strains, ciprofloxacin, doxycycline, gentamicin, imipenem, and pristinamycin showed complete sensitivity. Isolated Staphylococcus aureus strains, on the other hand, were Cephalosporin resistant. Cyclins and Macrolides are resistant to Pristinamycin (Streptogramins). Most common antibiotics are not effective against strains of E. coli and Staphylococcus aureus. To reduce the risk of infection in populations and to limit the spread of microbial resistance to antibiotics that can still act on these strains, it is critical to educate people about good hygiene practices, which are the most effective ways to reduce the risk of infection.

Author (s) Details

Roch Christian Johnson
Interfaculty Center of Training and Research in Environment for the Sustainable Development (CIFRED), University of Abomey-Calavi (UAC), Abomey-Calavi, Benin.

Gratien Boni
Interfaculty Center of Training and Research in Environment for the Sustainable Development (CIFRED), University of Abomey-Calavi (UAC), Abomey-Calavi, Benin.

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