Russia’s Sputnik vaccine maintains 91% efficacy at second interim analysis Nov. 24, 2020 By Nuala Moran No Comments LONDON – Efficacy data for Russia’s Sputnik V COVID-19 vaccine held steady at 91.4% in the second interim analysis, conducted after 39 confirmed cases of COVID-19 infection in 18,794 volunteers, seven days after they received the second dose.Read More