美国疾病管制与预防中心(CDC)估计,目前美国超过三分之一的COVID-19病例来自一组称为“FLiRT”的新冠变种,其中增长最快的是KP.2变异株。世界卫生组织(WHO)表示KP.2于1月开始在全球传播。
根据CDC发布的最新预测,目前“FLiRT”佔全美35.3%的新冠个案,其中约28.2%的新冠病例皆是由KP.2变种病毒引起。
KP.2同样“攻陷”加拿大,据加媒《环球新闻》(Global
News),KP.2佔加拿大所有新冠病例的26.6%,超过其他亚变体。
CDC发言人向美国哥伦比亚广播公司(CBS)透露,KP.2是2023年冬天JN.1病毒变体的密切相关后代。发言人指,根据目前的数据,儘管存在大量突变,但没有迹象显示KP.2比之前佔主导地位的变种严重。
WHO的新冠技术负责人范克尔克霍夫(Maria Van
Kerkhove)在线上记者会上表示,鑑于其他新兴变种的出现,WHO将密切关注这些变种的传播。
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