Russia's Sputnik V coronavirus vaccine is 95% effective according to a second interim analysis of clinical trial data, its developers said.
The two-dose vaccine will be available on international markets for less than €8.40 per dose, they said, and will be free for Russian citizens.
It can be stored at between 2 and 8C (35.6-46.4F), they said, instead of the temperatures below freezing required for some other vaccines.
The calculations of its effectiveness were based on preliminary data obtained 42 days after the first dose, Russia's health ministry, the state-run Gamaleya research centre and the Russian Direct Investment Fund (RDIF) said in a statement.