The estimated distribution (median and range of values from 19 countries for weeks 44 to 45, 1 November to 14 November 2021) of variants of concern (VOC) was 99.9% (75.1–100.0%) for B.1.617.2 (Delta). The distribution was 0.0% (0.0–3.0%) for B.1.1.7 (Alpha), which was downgraded from the list of VOCs on 3 September 2021.
然而,新的有更多突刺的非洲变异已经传到英国,虽然数量还非常少。今天早上的广播说,欧洲一些国家已经决定停止与六个非洲国家之间的航线。这种新变异的传染性及疫苗是否仍然有保护作用等都有待观察。