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August 30, 2023
國際關注, 美國要聞

新冠疫情又見新轉折? 今秋恐對美加形成威脅

最近新冠疫情有了轉折發展,新發現的Omicron變異病株BA.2.86,陸續在不同國家出現,加拿大也通報首宗確診病例,令專家們關注是否代表新冠疫情又進入新的階段。

BA.2.86變異株上個月首度在丹麥被發現,也是Omicron病毒的「親戚」,相較於2023年主要流行的XBB.1.5變異株,BA.2.86變異株的關鍵部位帶有超過35個突變。

美國、瑞士和以色列、南非也已通報出現這種新變異株的確診病例。加拿大29日通報首例,美國紐約州新增1例,美國已有4個州發現病例。

隨著天氣逐漸轉涼,每天都不斷有新的感染個案,原因可能是更多人進行室內活動,和學生返回學校上課。

CDC數據顯示,最近一個星期的住院人數和死亡人數增加了22%,但實際數字仍然低過過去幾年,而增幅比率加大原因是之前確診病例數字很低。

CDC顧問預計將於9月12號開會討論是否要推薦更新版的COVID疫苗。

疾病管制暨預防中心(CDC)上週表示,BA.2.86較可能造成「突破性傳染」,先前曾確診COVID-19或已接種預防性疫苗的民眾,比較有可能感染到BA.2.86變異株。但專家也認為,它較不可能造成重症或死亡病例。

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