本地纯净下载
纯净官方版WWW,514158,COM-514330,COM
从研究数据来看,接种流感疫苗能够将流感的发病和住院风险减少一半以上,学校是人群相对密集的场所,容易引起流感病毒的传播。如果在学生群体中大规模地开展流感疫苗的集中接种,可以使流感的聚集性疫情发生风险降低90%;如果有基础性疾病且免疫功能正常的成年人,也包括老年人,接种肺炎疫苗预防侵袭性疾病(如肺炎、脑膜炎)的效果可达到50%到80%。接种新冠病毒疫苗,也可以有效降低重症和死亡的风险。
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