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- W2382608509 abstract "Objective To investigative the cause of outbreak of gastroenteritis for making control measures. Methods All possible cases were selected by epidemiological individual survey. ELISA technique was applied to detect Norwalk-like virus (NLVs) in the stool. Bacterial cultivation techniques were applied to detect aerobic bacteria,Coliform bacteria,Salmonella,Shigella,Vibrio parahaemolyticus, Staphylococcus aureus, Streptococcus hemolyticus in water source,food,vomit and anus wipe according to General regulation for microbiological examination of food hygiene (GB/T4789). The Coliform bacteria in disinfected dinning utensils in canteen was detected according to Hygienic standard for disinfection of dinning and drinking utensils. Results There were 200 possible cases with an incidence of 7.60%. Most of cases showed the symptoms of nausea,vomiting,diarrhoea,abdominal pain and abdominal distension. The symptoms were light and self-limited. There were two peaks with the interval of 44 hours between the two peaks. Most of the cases male students. The ratio of male to female was 24: Gathering in class and dormitory was the observed . Out of the 19 stool samples 5 were positive for NLVs. All 26 samples in the control group gave negative results. Out of the 22 stool samples from workers of the canteen 8 were positive with a positive rate of 36.36%. 186 stool samples from workers of other canteen only one positive with a positive rate of 0.54%. The water source of male dormitory and dining utensil were contaminated. Conclusion This is an outbreak of gastroenteritis caused by Norwalk virus due to the combined results of contamination of dinning and drinking utensils, water source and contact transmission." @default.
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- W2382608509 date "2006-01-01" @default.
- W2382608509 modified "2023-09-25" @default.
- W2382608509 title "Epidemiological survey of an outbreak of gastrointestinal infectious disease in the students of a school" @default.
- W2382608509 hasPublicationYear "2006" @default.
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