The cosmonauts had volunteered to take the vaccine, which is named after the Soviet satellite that triggered the space race.
A nurse prepares Russia's "Sputnik-V" vaccine against the coronavirus disease (COVID-19) for inoculation at a clinic in Tver, Russia October 12, 2020.(photo credit: REUTERS/TATYANA MAKEYEVA/FILE PHOTO)ByREUTERSUpdated:
