Prevalence and antibiotic-resistance of Salmonella isolated from pork, chicken meat in Ha Noi, Bac Ninh and Nghe An

Abstract

This study was carried out in Ha Noi, Bac Ninh, and Nghe An. The result of analyzing 300 pork samples and 301 chicken meat samples collected from the above city/provinces indicated that the prevalence of Salmonella contamination in pork and chicken meat samples in Nghe An was 49% and 32%; in Bac Ninh was 44% and 58.4%; in Ha Noi was 64% and 37%, respectively. There were 22 different serotypes of Salmonella identified. Of which, the popular serotypes were S. typhimurium (15%), S. agona (31.1%), S. rissen (9.4%), S. muenster (6.3%). Salmonella spp isolates were resistant with sulfonamide (79.2%), ampicillin (68.8%), tetracycline (67.7%), trimethoprim (57.3%) and chloramphenicol (53.1%), and 100% Salmonella spp. isolates were susceptible with ceftazidime, which is a antibiotic of cephalosporin group (the 3rd generation). The co-resistance rate of Salmonella spp. (resistance to 3 or more antibiotics) isolated from chicken meat samples and pork samples were 76.7% and 69.8%, respectively.