Investigation and analysis of an outbreak of foodborne disease caused by Salmonella enteritidis
Objective This paper aims to investigate and analyze an outbreak of foodborne disease in Tai'an city,Shandong Province,so as to provide basis for the prevention and control of similar incidents.Methods Field epidemiology methods were used to investigate the foodborne disease outbreak in a school in Tai'an City,the samples were collected for pathogen isolation and identification,and the isolates were analyzed by pulsed-field gel electrophoresis(PFGE).Results A total of 64 cases were found in this incident,including 57 students and 7 faculty members.The incidence rate was 8.05％(57/708)in students and 11.67％(7/60)in faculty.Fever(57 cases,89.06％)and diarrhea(44 cases,68.75％)were the main clinical symp-toms.There were 23 males(6.63％,23/347)and 41 females(9.74％,41/421).Salmonella enteritidis was detected in sam-ples of 7 patients'stools,anal swabs from 3 patients and the breakfast fried egg with cucumber.PFGE analysis showed the DNA band patterns of 11 strains of Salmonella enteritidis are completely consistent and belong to the same clonal strain.Conclusion The results of epidemiological investigation,laboratory etiological detection,and molecular typing confirm that this incident was an outbreak of foodborne disease caused by Salmonella enteritidis.
Salmonella enteritidisFoodborne disease outbreakPulsed-field gel electrophoresis
NETL
NSTL
万方数据
维普
