圖右為採集自南非的Omicron、左為採自印尼的「超突變新Delta」示意圖。擷自英國每日郵報網頁圖為電子顯微鏡下的新冠肺炎病毒。美聯社
Virus Outbreak New Variant
FILE - This 2020 electron microscope image made available by the Centers for Disease Control and Prevention shows SARS-CoV-2 virus particles which cause COVID-19. The coronavirus mutant that just became dominant in the United States as of May 2022 is a member of the omicron family. But scientists say it spreads faster than its omicron predecessors, is adept at escaping immunity and might possibly cause more serious disease. (Hannah A. Bullock, Azaibi Tamin/CDC via AP, File)
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