结论：这两起食物中毒均由食用了毒力较强的织纹螺所致。
Conclusion: The two cases of food poisoning were caused by strong toxicity of Nassarius.
前言：目的：分析连云港地区织纹螺食物中毒的流行病学特征，探讨预防织纹螺食物中毒的方法。
Objective: This paper analyzes both the features of epidemiology of Nassidae food poisoning in Lianyungang area and the methods of prevention.
方法：收集近年织纹螺中毒资料，对连云港地区织纹螺进行形态学鉴定。应用生物测定法检测螺肉中麻痹性贝类毒素（PSP）含量。
Methods: With collection of the data of Nassidae food poisoning in recent years, the paper applies the biological determining method to test the content of PSP in the meat of Nassidae.
方法：收集近年织纹螺中毒资料，对连云港地区织纹螺进行形态学鉴定。应用生物测定法检测螺肉中麻痹性贝类毒素（PSP）含量。
Methods: With collection of the data of Nassidae food poisoning in recent years, the paper applies the biological determining method to test the content of PSP in the meat of Nassidae.
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