Covax is expecting to receive 250 million donated Covid-19 vaccine doses over the next six to eight weeks, according to the World Health Organization.
The influx of doses is a major boost for the scheme, which is aimed at ensuring poorer countries can access jabs and has so far delivered 152 million vaccine doses to 137 participating territories.
In a weekly operational update, the WHO said that at a recent UN Crisis Management Team meeting it "reported that there will be increased vaccine donations to the Covax facility, projecting an additional 250 million vaccines over the next six to eight weeks".
Covax is co-led by the WHO, the Gavi vaccine alliance and the Coalition for Epidemic Preparedness Innovations, with UNICEF using its vaccine