• Roseline E Uzeh and Sylvester Imafidon.
• Department of Microbiology, Faculty of Science, University of Lagos, Lagos, Nigeria.
• Afr Health Sci. 2022 Dec 1; 22 (4): 619626619-626.

BackgroundWara and nono are popular dairy products in Nigeria, rich in nutrients, highly exposed to microbial contaminants during processing and sale and support microbial growth.ObjectivesTo investigate occurrence and antibiotic resistance pattern of enteric bacterial pathogens in dairy products.MethodsDairy products were serially diluted and cultured on Eosin Methylene Blue agar, Salmonella-Shigella agar, McConkey agar and nutrient agar at 37°C for 24 h. Characterisation and identification of isolates with API 20E kit (Biomereux, France). Antibiotic susceptibility was with agar disc diffusion. Polyvalent O and H antisera for Salmonella serotyping.ResultsSalmonella enterica serovar Enteritidis, Salmonella enterica serovar Typhimurium, Salmonella enterica serovar Typhi, Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca, Enterobacter aerogenes, Enterobacter cloacae and Serratia marcescens, were identified. Dominant enteric bacterium detected was E. coli followed by Salmonella spp. Serratia marcescens was the least occurring. The isolates were most resistant to trimethoprim-sulfamethoxazole (96.7%), amoxicillin (83.3%), augmentin (83.3%), chloramphenicol (66.7%), streptomycin (50%). They were resistant to ≥ 4 (multiple) antibiotics, E. coli 8, Salmonella spp. 7, Serratia marcescens 6 and Klebsiella spp. and Enterobacter spp. 4 each.ConclusionThe presence of enteric bacterial pathogens in wara and nono and their resistance to multiple antibiotics was reported in this study.© 2022 Uzeh RE et al.

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