A person uses laboratory equipment as researchers at Aalborg University screen and analyse all the positive Danish coronavirus disease (COVID-19) samples for the new English virus variant "cluster B.1.1.7", in Aalborg, Denmark January 15, 2021. Ritzau Scanpix/Henning Bagger via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT. NO COMMERCIAL OR EDITORIAL SALES IN DENMARK.