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國際旅行衛生健康咨詢網

甲肝疫區分布

2014-03-26 00:00  作者:admin   

 

甲型肝炎屬偶發疾病,在世界各地流行,有循環復發的趨勢。

據估計,每年世界各地甲型肝炎感染者有140萬例。與食物或水受污染有關的疾病流行可突然暴發。

甲型肝炎疫區  2006

 

責編:
毛片一级做a爰片性色
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