食用沙门菌污染凉拌菜引起的食物中毒调查与分析

Investigation and Anaysis on Food Poisoning Caused by Salmonella Contaminated Cold Dish

目的及时查明一起食物中毒的原因,为预防控制类似的突发公共卫生事件提供经验。方法采用流行病学调查方法,现场采集可疑食物和污染样品,依据相关检测方法进行检测。结果调查发现该次群体发病特点为起病急骤,潜伏期短,发病曲线突然上升后又突然下降,无拖尾现象;临床症状相似,28名患者均出现腹痛、腹泻,53.6%病人出现恶心、呕吐,82.1%患者出现发热,罹患率达32.2%;冷荤间卫生差,熟食具大肠菌群污染严重,并在刀、板、熟食盆中检出沙门菌;发病者均食用过同一种食物,凉拌菜中检出沙门菌;所有患者经使用抗生素等对症治疗后均康复,无并发症和死亡。结论通过流行病学调查、实验室检测和临床诊治,确定该次群体发病是一起由于就餐者食用了沙门菌污染的凉拌菜而引起的沙门菌食物中毒。

[Objective] To investigate the cause of a food poisoning case timely, provide experience for prevention and control of similar public health emergencies.[Methods]According to the epidemiological method, the samples of questionable food and contamination were collected on field and examined by relevant detection methods.[Results]This food poisoning case was characterized by a rapid onset, a short incubation period, a rapid rise and drop curve without tailing. All patients had similar clinical symptoms： all 28 patients suffered from abdominal pain and diarrhea; 53.6% of the patients got nausea and vomiting, and 82.1% of the patients had a fever. The attack rate reached 32.2%. The hygiene condition of the cold dish room was poor, kitchenware for prepared-food was contaminated severely with Coliform bacteria, and Salmonella was detected on kitchen knives, chopping boards and containers for prepared-food. All the patients had consumed the same cold dish which was detected Salmonella. After antibiotics treatment, all patients were recovered without complication and death.[Conclusion]Based on the epidemiological investigation, laboratory detection and clinical diagnosis, this outbreak was confirmed as food poisoning caused by Salmonella contaminated cold dish.