TO GO WITH AFP STORY BY KELLY MACNAMARA / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / Wellcome Sanger Institute / Dan Ross " - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS
TOPSHOT - This handout photograph made available by the Wellcome Sanger Institute on January 22, 2021 and taken during the month of August 2020 shows a member of staff picking-up Covid-19 test samples in a frozen storage in order to be sequenced at the Wellcome Sanger Institute, in Hinxton. - To monitor changes to the coronavirus that could supercharge the pandemic or render vaccines less effective, scientists must sequence its genetic code to catalogue potentially dangerous mutations as they emerge. But so few countries are conducting and sharing surveillance that experts are as worried about the mutations they cannot see as those they can (Photo by Dan Ross / Wellcome Sanger Institute / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / Wellcome Sanger Institute / Dan Ross " - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS