Russia says its second COVID-19 vaccine is 100 percent effective based on the results of clinical trials.
This is according to the country's leading news agency TASS on Tuesday.
Epi-Vac-Corona, the vaccine manufactured by Siberia’s Vector Institute has undergone mass trials.
It's due to be mass-produced from February.
Russia's first vaccine, Sputnik V, is known to be 92 percent effective.