前兩年有大學生死於乙性腦炎，之後美國大學要求必須免疫接種腦炎疫苗以防疫情爆發

來源: Diana-Sun 於 2016-02-12 11:13:20 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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