Researchers at the University of Pennsylvania are working to create a special chewing gum that could help reduce the spread of COVID-19 by "trapping"
武漢肺炎(新型冠狀病毒病,COVID-19)Omicron變異株強勢席捲俄羅斯,俄羅斯連續4天單日新增確診病例數皆破3萬例。莫斯科市長索比亞寧(Sergei Sobyanin)宣布,企業至少要有30%的員工遠距在家上班。根據俄媒《莫斯科時報》報導,俄羅斯20日新增3萬8850例確診及684例死亡病例