Russia's Sputnik V shot around 90% effective against Delta variant, developers say

Russia's Sputnik V shot around 90% effective against Delta variant, developers say

source https://www.indiatoday.in/coronavirus-outbreak/vaccine-updates/story/russia-s-sputnik-v-shot-around-90-effective-against-delta-variant-developers-say-1820926-2021-06-29?utm_source=rss