"A study of the Sputnik V vaccine, developed by the Gamaleya Research Center of the Ministry of Health of the Russian Federation, on volunteers over 60 years old, has started," RIA Novosti Murashko quotes.

Earlier, Venezuelan President Nicolas Maduro announced the start of trials in the republic of the Russian vaccine against COVID-19 Sputnik V.

Professor of the Department of Virology at the Belozersky Institute of Moscow State University, Alexei Agranovsky, in an interview with URA.RU, assessed the immunity of those vaccinated against COVID-19.