Investigation on a case of foodborne disease caused by diarrheagenic Escherichia coli
Objective This paper aims to investigate a foodborne disease incident that occurred in a school,analyze suspicious meals,suspicious foods,and possible pathogenic bacteria,and provide reference for the prevention and control of food safety in schools and similar foodborne disease incidents in the future.Methods A case definition was established based on the charac-teristics of the event,and active case search was conducted by consulting the records of the schools medical room,outpatient and emergency records of nearby hospitals,and the municipal foodborne disease monitoring network.The suspicious food and pathogenic factors of this incident were found through field epidemiological investigation,hygiene investigation and laboratory test.Results A total of 36 cases were found in this event,with an incidence of 6.57％(36/548).The main symptoms were abdomi-nal pain(100％),diarrhea(100％)and nausea(27.77％).The average latency was 11.25(5-18)hours.A case-control study was used to conduct field epidemiological investigation.The results showed that Roast Goose was the suspiciously exposed food(OR=11.458,95％CI:1.489-88.192).The hygiene survey showed that there was a possibility of cross contamination in the food processing process,and the Chinese food was stored at room temperature too long(＞4 h)after being cooked;27 anal swab samples were collected for detection,of which 9 were positive for diarrheagenic Escherichia coli(EPEC).Conclusion This is a foodborne disease event caused by diarrheagenic Escherichia coli contamination,and the food was cross-contaminated during processing.Schools should strengthen food safety management and prevent foodborne disease incidents.
NETL
NSTL
万方数据
维普
