This may reflect the situation in many countries where the earliest cases often occurred as school outbreaks but later cases were occurring in the community.

许多国家的情况可能都是如此，其最初的病例通常在学校中暴发，而后来的病例则发生在社区中。

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Serious outbreaks of foodborne disease have been documented on every continent in the past decade, and in many countries rates of illnesses are increasing significantly.

过去十年间，各大洲均有食源性疾病严重暴发的档案记载，许多国家的疾病发生率还呈大幅度上升趋势。

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