Coronavirus: EU regulator urges caution on Russia's Sputnik V vaccine
"We don't at the moment have data... about vaccinated people. It is unknown."
A medical worker holds a syringe with Sputnik V (Gam-COVID-Vac) vaccine against the coronavirus disease (COVID-19) before administering an injection at a vaccination centre in a shopping mall in Saint Petersburg, Russia February 24, 2021.(photo credit: REUTERS)ByREUTERS
