單日確診首度突破4萬人！英國變種新冠感染率高，醫護恐難負荷

<![CDATA[<img src="https://image.cache.storm.mg/styles/smg-150x150-fp/s3/media/image/2020/12/21/20201221-041908_U720_M661733_7a74.jpg?itok=zpCFhGzB">英...