Serological identification and antimicrobial resistance of Salmonella isolates from broiler carcasses and human stools in Beni-Suef, Egypt

The present study was designed in order to estimate the prevalence of Salmonella spp. in broiler carcasses and human stools in Beni-Suef province (Egypt). Also, the serological identification and testing of the antimicrobial resistance/susceptibility of the isolates have been done. The obtained results revealed that the prevalence of Salmonella in broiler meat, skin, and pooled giblets (liver, gizzard, and heart) was 76, 80, and 64%, respectively, while in the case of human stools the percentage of positive samples represented 4%. The predominant serotype in broiler carcasses was Salmonella Infantis (56.36%) followed by Salmonella Kentucky (25.45%), and then Salmonella Enteritidis with a percentage of 5.45%. However, two serotypes of each of Salmonella Ferruch, Salmonella Kottbus, and Salmonella Virchow were identified out of 55 Salmonella isolates, while the only isolate found in human stool samples was serotyped as Salmonella Infantis. The results of antimicrobial resistance/susceptibility highlighted the existence of multiple antibiotic resistance (MAR) by several strains of Salmonella.