XD has not been identified in the UK to date.

迄今为止，XD 在英国尚未被确认。

UKHSA's new analysis has looked at the recombinants known as XF, XE, and XD.

UKHSA 的新分析研究了被称为 XF、XE 和 XD 的重组体。

Britain's Health Security Agency is monitoring three recombinant lineages: XD, XE and XF.

英国卫生安全局正在监测三个重组谱系：XD、XE 和 XF。

Of these, XD and XF are recombinants of Delta and Omicron BA.1, while XE is a recombinant of Omicron BA.1 and BA.2.

其中，XD 和 XF 是 Delta 和 Omicron BA.1 的重组体，而 XE 是 Omicron BA.1 和 BA.2 的重组体。

XD was first detected in December and by March 22, 49 samples had been found in France, Denmark and Belgium.

XD 于 12 月首次被发现，到 3 月 22 日，已在法国、丹麦和比利时发现了 49 个样本。

XD has not been found in the U.K., but 49 cases – mostly in France – have been reported to global databases.

在英国尚未发现 XD， 但已向全球数据库报告了 49 例（主要在法国）。