美国新冠主流变异株EG.5传播力超强 已蔓延全球51国
文章来源: Newtalk 于
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新冠肺炎(COVID-19)有多种「需留意变异株」,世界卫生组织(WHO)正在密切监测,其中一种是
EG.5,又称「艾里斯」(Eris),这个 Omicron
亚系变异株具有遗传优势和免疫逃逸能力,目前在美国等51个国家流行,但似乎没有增加重症或死亡的风险。
EG.5 已在 51 个国家发现,包括中国、南韩和日本,世卫评估虽然整体风险不高,但 EG.5
可能具有遗传优势和免疫逃逸能力,可能会在全球扩散,并造成病例数急增。
美国疾病管制暨预防中心(CDC)的数据显示,EG.5 变异株已成为美国最常见的变异株,佔确诊个案的
17%,主要的症状与其他变异株类似,包括喉咙痛、流鼻水、鼻塞、咳嗽和发烧等感冒症状。。世卫已将 EG.5
列入「需留意变异株」(variant of
interest),并向各国提出建议,要求所有国家持续上报新冠数据,尤其是死亡和严重疾病、基因序列和疫苗效果方面的数据,并呼吁儘快为高风险族群施打疫苗。
世界卫生组织总干事谭德塞(Tedros Adhanom Ghebreyesus)说,自从 5 月 5
日宣布新冠肺炎的全球突发公共卫生事件结束后,全球的病例数、住院人数和死亡人数都在下降,但仍要小心可能出现更危险的变异株,可能导致疫情反弹。
谭德塞进一步指出,由于人口免疫力的提高、早期诊断和更好的治疗,目前感染新冠肺炎的严重程度和死亡率都比一年前低很多,但世卫仍将新冠肺炎对全球公共卫生的风险评估为高。
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