Abstract
Antimicrobial resistance (AMR) of foodborne pathogens is of public health concern, especially in developing countries such as Zambia. This study was undertaken to determine the antimicrobial resistance profiles of Escherichia coli (E. coli) and Salmonella isolated from retail broiler chicken carcasses purchased from open markets and supermarkets in Zambia. A total of 189 E. coli and five Salmonella isolates were isolated. Identification and confirmation of the isolates were done using Analytical Profile Index (API 20E) (Biomerieux®) and 16S rRNA sequencing. Antimicrobial susceptibility tests (AST) were performed using the Kirby Bauer disk diffusion technique using a panel of 9 antibiotics. WHONET 2018 software was used to analyze AST results. The E. coli isolates were mostly resistant to tetracycline (79.4%), ampicillin (51.9%), and trimethoprim/sulfamethoxazole (49.7%). Two of the five Salmonella isolates were resistant to at least one antibiotic. This study has demonstrated the presence of AMR E. coli and Salmonella on retail broiler chicken carcasses from open markets and supermarkets, which is of public health concern.
Highlights
Antimicrobial resistance (AMR) of foodborne pathogens is of public health concern, especially in developing countries such as Zambia
The high resistance to tetracyclines, sulfonamides and beta- This study has demonstrated the presence of AMR E. coli lactam antibiotics could be attributed to the misuse of an- and Salmonella on retail broiler chicken carcasses in selected tibiotics in livestock and humans, especially among small districts in Zambia
A study that was conducted in five African and ESBL producing E. coli that are of public health concountries, including Zambia, revealed that broiler producers cern if acquired by humans
Summary
Ment.[2] One of the strategies producers often resort to is the use of antibiotics to prevent and treat diseases of poultry to Poultry meat forms an integral part of the diet, especially in optimize growth.[3] developing countries. Of antimicrobial-resistant E. coli and Salmonella on raw retail broiler chicken carcasses in Zambia. E. coli (18% and 25.5%, respectively) were among the most the secondary sampling units were the retail broiler chicken detected organisms causing bacterial diarrhoeal disease in carcasses. Three open markets and one Supermarket in Chilanga, casses at each market were selected, and from each shop, and one open market and no supermarket in Chongwe
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