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Omicron病毒出现亚变种。路透(photo:UDN)
新冠肺炎变种病毒株Omicron已让全球防疫阵脚大乱,英国公卫专家调查发现,Omicron还有亚变种(sub-variant),被称为"Omicron's sister"(Omicron的妹妹),其实在去年12月初Omicron开始散播前之后不久,就已经出现。英国卫生安全局UKHSA将正式宣布调查结果。
Omicron的亚变种目前感染案例不多,但可能更具感染力,且PCR检测更难发现。好消息是目前没有证据其致病程度会更严重。
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