A handout photo provided by the Russian Direct Investment Fund (RDIF) shows samples of a vaccine against the coronavirus disease (COVID-19) developed by the Gamaleya Research Institute of Epidemiology and Microbiology, in Moscow, Russia August 6, 2020. Picture taken August 6, 2020. The Russian Direct Investment Fund (RDIF)/Handout via REUTERS ATTENTION EDITORS – THIS IMAGE WAS PROVIDED BY A THIRD PARTY. NO RESALES. NO ARCHIVES. MANDATORY CREDIT.