Posted in Uncategorized Russia’s Sputnik V shot around 90% effective against Delta … November 20, 2022 Russia’s Sputnik V vaccine against COVID-19 is around 90% effective against the highly contagious Delta variant of coronavirus, its developers said on Tuesday. https://www.reuters.com/business/healthcare-pharmaceuticals/russias-sputnik-v-vaccine-less-effective-against-delta-variant-tass-2021-06-29/