目录 ... 呕吐 vomiting ; emesis ; vomit ; throw up ; bring up ; spew 呕吐物 vomit ; vomitus; vomited matter 咖啡渣 coffee-grounds ...
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Methods Through field epidemiological investigation, residual food, the vomited matter, excrement and anal swab of the patients, the anal swab of the cooks were all collected, sampled and tested.
方法进行现场流行病学调查，采集留样食物样品、患者呕吐物、排泻物、肛拭子，厨师肛拭子检测分析。
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