Occurrence and antibiotics profiles of Escherichia coli isolated from streams in Akoko Metropolis

Abstract

Stream water can serve as sources of drinking water and other domestic use. Hence, this study focused on the occurrence and antibiotic resistance of Escherichia coli (E. coli) found in streams located in Akoko Metropolis, Ondo State, Nigeria. Multiple water samples were taken from different streams in Iwaro-Oka, Akungba, Etioro, and Ayegunle. These were cultured on EMB for the presence of E. coli strains. The identity of the E. coli isolates were confirmed by microscopy and biochemical test. Antibiotic susceptibility testing (AST) was performed on the isolates by disc diffusion method using commonly used antibiotics. E. coli was isolated from all the water samples with coliform count ranging from 3.0x10² to 9.5x10³ CFU/mL AST showed that 47% of the E. coli isolates were resistant to cefixime and 40% resistant to ceftriaxone. However, 80% of the isolates were susceptible to imipenem and 60% susceptible to Augmentin and nalidixic acid. The findings of this study revealed that streams can serve as potential reservoir for antibiotic-resistant E. coli which is of public health concern. In addition, it highlights the importance of monitoring and managing water quality in these areas to mitigate potential public health risks associated with antibiotic-resistant bacteria.