Prevalence and antibiotic resistance pattern of Salmonella spp. isolated from farms at Dak Lak province

Abstract

This study is to survey the prevalence and antibiotic resistance pattern of Salmonella spp. isolated from the farms at Dak Lak province, Viet Nam. 139 farms including 5 civet farms, 14 pig farms and 120 duck farms were sampled and analyzed. The results showed that many samples collected from 120 duck farms,14 pig farms and 5 civet farms were positive positive for Salmonella spp. Four serogroups of Salmonella species were demonstrated, Salmonella group B (25 strains), Salmonella group non-typable (13 strains), Salmonella group D (8 strains) and Salmonella group C (2 strains). There were 50 % of Salmonella strains resisting to at least one antibiotic, 75 % of the strains expressing multiple antibiotic resistance. In particular, 3 strains Salmonella secreted to ESBL (Extented-spectrum- beta lactamse).