Russia proposes Pfizer test Sputnik Light as Covid booster shot after report of mRNA vaccines’ lowered efficacy against Delta

Follow RT on A US preprint study says the Pfizer and Moderna Covid jabs have a lowered effectiveness against the highly contagious Delta variant. Sputnik V’s developers have now proposed that Pfizer test its ‘Light’ version as a booster shot. The offer was made through Sputnik V’s official Twitter account,…

read more