病毒变异, 疫苗还管用吗 | mRNA疫苗问答 | 英国变异病毒爆发 | 传播力大幅增加 | 辉瑞 | Moderna |长期副作用 | 新冠病毒 | strain virus | vaccine

【疫苗科普】英国变异新冠病毒传播性增高70%，mRNA疫苗 (包括辉瑞和莫德那疫苗）的有效性是否受影响？ What is the new Covid strain , and will mRNA vaccines (Moderna, Pfizer) work against it?