Deltacron: XD and XF recombinants now ECDC Variants under Monitoring

Coronavirus, Delta, Deltacron, Denmark, England, Europe, France, Genome, Infection, Northern Ireland, Omicron, Recombinants, Recombination, Scotland, Testing, Transmission, UK, Wales, XD, XE

The European Centre for Disease Prevention and Control (ECDC) have added Deltacron recombinants XD and XF to their list of Variants under Monitoring. 

22 sequencing samples from France and Denmark have been designated as XD, and 34 samples from the UK have been designated as XF.


ECDC: SARS-CoV-2 variants of concern, Variants of Interest, and Variants under Monitoring as of 24 March 2022

XD at


XF at


See our post below for more information on the two new recombinants:

Recombination: Details on XD, XE and XF recombinants by Tom Peacock











** This post was originally published on March 25, 2022 **