H7N9 avian influenza(禽流感)是全球首次发现的新亚型流感病毒。流感病毒(influenzavirus)可分为甲(A)、乙(B)、丙(C)三型。其中,甲型流感依据流感病毒特征可分为HxNx共135种亚型,H7N9亚型禽流感病毒是其中的一种,既往仅在禽间发现,从未发现过人的感染情况。
感染该病毒的初期症状(initial symptoms)为发热(fever),咳嗽(cough)及呼吸困难(breathing difficulty)。专家认为,根据目前对密切接触者(anyone in close contact)的医学观察结果,未提示该病毒具有较强的人传人能力(human-to-human transmission)。此外,目前国内外尚无针对H7N9禽流感病毒的疫苗(there are no vaccines against the virus)。
此前曾经蔓延全球的动物流感有2009年的甲型H1N1流感,也被称为 “猪流感(swine flu),以及2011年的H5N1禽流感(bird flu)。
上海、安徽相继发现3人感染H7N9禽流感,其中2人死亡,1人病情危重。国家卫生和计划生育委员会昨日通报,此次人感染的H7N9禽流感病毒,是全球首次发现的新亚型流感病毒,既往仅在禽间发现;因此,尚未纳入我国法定报告传染病监测报告系统。
On Saturday, the three cases were confirmed to be humaninfections of H7N9 avian influenza, based on clinical observation, laboratory tests andepidemiological surveys.
上周六,根据病例的临床表现、实验室检测和流行病学调查结果,诊断这3名患者为人感染H7N9禽流感确诊病例。
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