Distribution characteristics and drug resistance of Salmonella in outside environment and foodborne disease patients in Yuyao, 2014−2016

Objective To understand the distribution characteristics and drug resistance of Salmonella in water, food and food borne disease patients after flood disaster in Yuyao, Zhejiang province, and provide scientific basis for clinical treatment and prevention of foodborne diseases.

Methods Samples were collected from river water in the urban area, food and diarrhea patients in Yuyao, and then enrichment culture, isolation, biochemical identification, serotyping and drug susceptibility test were carried out.

Results A total of 283 Salmonella strains were detected in Yuyao during 2014−2016, the detected strains belonged to 32 serotypes,S. Typhimurium was predominant (40.28%). Salmonella had high resistance rate to ampicillin (51.59%) and piperacillin (42.05%). It was found that 36 strains were multi-drug resistant.

Conclusion The contamination rate of Salmonella in outside environment was high in Yuyao, the detected Salmonella strains had multiple serotypes, high drug resistance rate and high multidrug resistance. S. Typhimurium was predominant. The distribution and drug resistance of Salmonellain river water, foods and foodborne disease patients after flood disaster had relevance and unique characteristics.