effective

Further analysis shows that the Oxford-AstraZeneca COVID-19 vaccine is 76 percent effective 3 months after the first injection

Russia’s vaccine is safe and effective, published studies show

The Russian vaccine COVID-19 is 91 percent effective: study

Russian Sputnik V vaccine 91.6% effective against COVID-19 in final stage test: study

Pfizer’s COVID-19 vaccine is less effective against the South African variant

The Russian vaccine COVID-19 is 91.6 percent effective in the study

Sputnik V 91.6% effective vaccine in final stage test: The Lancet

The Russian Sputnik V COVID-19 vaccine is highly effective, the study concluded

The Russian Sputnik V vaccine appears safe, effective

Russian coronavirus vaccine 91.6% effective: Lancet

Russian Sputnik V vaccine 92% effective in combating COVID-19

The Russian Sputnik V vaccine is 91.6% effective against symptomatic Covid-19