世界卫生组织 世界衛生組織宣布將豬流感警戒級別提升至第5級。[http:--news.bbc.co.uk-chinese-simp-hi-newsid_8020000-newsid_8025900-8025947.stm BBC中文網]url=http:--news.bbc.co.uk-chinese-simp-hi-newsid_8020000-newsid_8025900-8025947.stm