Report copyright - 辦公室預防流行性感冒 - oshc.org.hk · 2016. 10. 20. · Prevention of Influenza at Workplace 流行性感冒基本知識 Basic understanding of influenza 類型 Types 已知的流感病毒有三種類型,分別是:甲型、乙型和丙型。一般而言,在本港最普遍的流感多
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