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What foods are associated with Norwalk virus?

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ºËÐÄÌáʾ£ºShellfish and salad ingredients are the foods most often implicated in Norwalk outbreaks. Ingestion of raw or insufficiently steamed clams and oysters poses a high risk for infection with Norwalk virus. Foods other than shellfish are contaminated by
      Shellfish and salad ingredients are the foods most often implicated in Norwalk outbreaks. Ingestion of raw or insufficiently steamed clams and oysters poses a high risk for infection with Norwalk virus. Foods other than shellfish are contaminated by ill food handlers.
      ¸ü¶à·­ÒëÏêϸÐÅÏ¢Çëµã»÷£º http://www.trans1.cn
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