研究：英国新冠疫情或存在1300多个不同源头_BEC初级作文

研究：英国新冠疫情或存在1300多个不同源头

研究显示，这些输入病例中，直接来自中国的不到0.1%。相反，英国新冠疫情主要是由2月下旬从意大利出发、3月上旬至中旬从西班牙出发、3月中下旬从法国出发前来英国的国际旅行者引发的。

"The big surprise for us was how fluid the process was, the rate of and source of virus introduction shifted rapidly over the course of only a few weeks," said Prof Oliver Pybus, from the University of Oxford.

牛津大学的奥立弗·皮布斯教授说：“最让我们吃惊的是这个过程是多么的流畅，病毒传播的速度和来源在短短几周内就迅速发生了变化。”

"This happened later than perhaps we would have expected," added Prof Loman.

洛曼教授补充道：“这可能比我们预期的要晚。”

The study estimates 80% of those initial cases arrived in the country between 28 Feb and 29 March - the time the UK was debating whether to lockdown.

该研究估计，80%的最初病例是在2月28日至3月29日期间抵达英国的，当时英国正在讨论是否实施封锁。

After this point, the number of new imported cases diminished rapidly.

此后，新增输入病例迅速减少。

The earliest one could be traced back to the beginning of February, but it is possible there were cases even earlier that could not be picked up by the analysis.