Kuai Technology reported on August 29 that a study recently released by the Centers for Disease Control and Prevention of the United States showed that after the delta mutant strain of the COVID-19 became the “main force” of the epidemic, the overall effectiveness of the COVID-19 vaccine approved in the United States has been reduced. About one-third. Researchers analyzed the …

Covid-19 病毒傳播最遠 4 米, 鞋底最近也可以傳播, 美國疾病控制與預防中心發出了預警，稱新的冠狀病毒可以在空中傳播到 13 腳 (關於 4 米), 它也可能被污染於鞋底並引起變速箱. 此信息是 …