Evaluation Of The Antimicrobial Resistance of Salmonella enteric Serovar Enteritidis Isolated Poultry

Abstract

Salmonella enteritidis is one of the major food-borne pathogens in the poultry industry which is now exhibiting increased antimicrobial resistance. This antimicrobial resistance can easily be transferred to other bacteria and humans through contaminated meat, eggs, and feces. The objective of this study was to evaluate the antimicrobial resistance of seven isolates of Salmonella enteritidis obtained from different sources against 23 different antimicrobials. For this purpose, first of all, few confirmatory tests were performed on Salmonella enteritidis isolates that were already identified and provided by Abubakar et al., This was followed by antibiotic resistance testing by disc diffusion method in which antimicrobial discs were placed on Mueller Hinton (MH) agar after bacterial spreading. The results showed that Salmonella enteritidis isolates were 100% resistant to 15 antibiotics including amikacin, tetracycline, gentamycin, nalidixic acid, sulfamethoxazole, vancomycin, streptomycin, kanamycin, erythromycin, teicoplanin, rifampicin, enrofloxacin, oxacillin, clindamycin, and minocycline. There was 100% susceptibility towards meropenem. For cephalosporin, ciprofloxacin, and imipenem, one of the seven isolates showed resistance towards them. Most of the Salmonella enteritidis isolates were also resistant to the rest of the antibiotics. Concluding, Salmonella enteritidis has high resistance even towards extended spectrum antibiotics and can be classified as multi-drug resistant. This is of importance as it can lead to antibiotic resistance in other microbes and humans as well which can be a great public hazard