https://blog.wongcw.com/2021/06/07/%e8%8b%b1%e5%9c%8b%e5%ae%98%e5%93%a1%ef%bc%9a%e6%96%b0%e5%86%a0delta%e8%ae%8a%e7%95%b0%e6%af%92%e6%a0%aa%e5%82%b3%e6%9f%93%e7%8e%87%e8%bc%83%e5%89%8d%e4%b8%80%e6%b3%a2%e5%bc%b740/
英國官員:新冠Delta變異毒株傳染率較前一波強40%