原文标题： U.S. confirms nation’s first case of omicron Covid variant in California 原文连结： https://t.ly/ybc3 发布时间： 2021/12/2 原文内容： -The United States has confirmed its first case of the new, heavily mutated coronavirus variant called omicron. -The variant, initially known as B.1.1.529, was first detected in South Africa, the World Health Organization said. -Scientists will need a few weeks to determine how vaccines and treatments perform against the new variant. 美国已经确认了其首例名为omicron的新型，严重突变的冠状病毒变体。 世界卫生组织表示，这种最初被称为B.1.1.529的变体首先在南非被发现。 科学家们将需要几周的时间来确定疫苗和治疗方法如何针对新变体。 心得/评论： ※必需填写满20字 仅节录一小段 整段有点长.看到许多人不知道突然在跌啥就贴过来了. 反正又是疫情再起.