A medical worker prepares a dose of COVID-19 vaccine in a medical train in Tulun
A medical worker prepares a dose of the Sputnik V (Gam-COVID-Vac) vaccine against the coronavirus disease (COVID-19) in a carriage of the Academician Fyodor Uglov medical train, at a railway station in the town of Tulun in Irkutsk Region, Russia March 16, 2021. REUTERS/Evgeny Kozyrev
