Scientists cautious as Russia says early data shows Sputnik V Covid-19 vaccine is 92% effective

Russia's sovereign wealth fund said on Wednesday that an early analysis of data from its Sputnik V coronavirus vaccine suggests it is 92% effective. However, some scientists are urging caution, noting that the data is far from conclusive.

source https://www.cnn.com/2020/11/11/health/russia-vaccine-sputnik-coronavirus-intl/index.html