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世卫组织在北京发布2019-2020年度北半球季节性流感疫苗组份信息

2019-02-21 18:33:01    新华网

新华社北京2月21日电(记者王秉阳)世界卫生组织于21日在北京发布2019-2020年度北半球流感疫苗组份信息,将世界卫生组织的推荐建议与科学证据一起传达给监管机构和全球疫苗生产商。这是世卫组织20年来首次在其总部之外的地点举办北半球疫苗组份推荐会。

世界卫生组织推荐的2019-2020年度北半球季节性流感疫苗组份信息如下:

-A/Brisbane/02/2018 (H1N1)pdm09类似病毒;

-A(H3N2)亚型:延迟公布

-B/Colorado/06/2017类似病毒(B/Victoria系病毒);

-B/Phuket/3073/2013类似病毒(B/Yamagata系病毒);

鉴于最近流行的具有不同抗原性和基因特性的A(H3N2)亚型流感病毒的比例在发生改变,A(H3N2)亚型的疫苗组份延迟至2019年3月21日公布。对于生产三价流感疫苗的公司可使用其中A(H1N1)、A(H3N2)及B/Victoria系病毒组份。本次疫苗组份推荐会由中国疾病预防控制中心病毒病预防控制所承办。

因为流感病毒高度的易变性和不可确定性,为了疫苗更有效,流感疫苗中所含病毒组份需要定期替换。世卫组织每年在南、北半球各组织一次流感疫苗推荐会,经过全球流感监测网络专家咨询组协商,分析流感病毒监测数据,并就下一个流感季节流感疫苗的构成提出建议,建议被相关国家疫苗管理机构和制药公司用于发放流感疫苗许可证、开发、生产流感疫苗等。

流感是由流感病毒引起的一种急性呼吸道传染病,严重危害人群健康。流感病毒其抗原性易变,传播迅速,每年可引起季节性流行,在学校、托幼机构和养老院等人群聚集的场所可发生暴发疫情。孕妇、婴幼儿、老年人和慢性基础疾病患者等高危人群,患流感后出现严重疾病和死亡的风险较高。接种流感疫苗是预防流感病毒感染及其严重并发症的最有效手段。

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