Tedros Adhanom Ghebreyesus said that 189 countries were participating in the programme.
The World Health Organization said on Friday nearly 1 billion doses of leading vaccine candidates had been secured as part of the COVAX programme to provide vaccines for low- and middle-income countries.
Tedros Adhanom Ghebreyesus, WHO director-general, told a Geneva news conference on Friday that 189 countries were participating in the programme.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)