一名醫務人員在洛杉磯好萊塢環球影城準備一劑 COVID-19 疫苗, 加利福尼亞州, 美國, 六月 18, 2021.(照片: 新華社) 中國並不是唯一一個與 SARS-CoV-2 變異變種作鬥爭的國家, 去年年底出現並在最近幾天開始橫衝直撞，因為美國和新加坡等更多國家進行了修訂 …

UN News, October 13th, World Health Organization Director-General Tedros Adhanom Ghebreyesus said at a press conference in Geneva today that there have been some recent discussions about the concept of so-called “herd immunity” through the spread of the virus, but this There are problems in science and ethics, and it is definitely not a viable option. Tan Desai said that …