The immunological efficacy of the Russia-developed coronavirus vaccine EpiVacCorona is 100 per cent, Sputnik News quoted the Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being as saying.

Coronavirus vaccine

EpiVacCorona is a coronavirus vaccine developed by the Vektor State Research Center of Virology and Biotechnology in Russia.

COVID Vacciantion in other countries 

Brazil, currently one of the hardest-hit countries in the world by the pandemic, has launched its mass vaccination campaign against the novel coronavirus, Minister of Health Eduardo Pazuello said.

The initial plan was to begin nationwide vaccination on Wednesday, but the date was moved up on Monday in response to the request of state governors, Xinhua news agency quoted Pazuello as saying on Monday.