采用现场流行病学调查方法。
方法:采用流行病学调查方法收集病例,进行统计学处理。
Methods: The subjects were collected with epidemiological observation method and analyzed statistically.
方法:采用现场流行病学调查方法,采取可疑食品及环境标本进行实验室检测。
Methods Adopt Fieldepidemiology investigation methods, take the questionable food and environment specimen to carry out laboratory detection.
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