The World Health Organization chief said Tuesday 11 million vaccine doses to fight COVID-19 will be delivered this week, and 237 million shots allocated to 142 economies and countries through the COVAX facility by the end of May for equitable distribution of jabs.

Axar.az reports that WHO Director-General Tedros Ghebreyesus said Angola, Cambodia, the Democratic Republic of Congo, and Nigeria could also expect deliveries of COVAX-supplied vaccines on Tuesday.

Tedros tweeted that 624,000 COVID-19 vaccine doses arrived in Angola, Southern Africa on Tuesday, adding that frontline health workers and vulnerable groups at high risk of COVID-19 will be prioritized.

The timeline for the delivery of doses, made by AstraZeneca and by India's Serum Institute, will be split into separate two-month schedules, COVAX said in a statement, with the first in February and March and the second in April and May.

"These timelines are dependent on a variety of factors including national regulatory requirements, availability of supply, and fulfillment of other criteria such as validated national deployment and vaccination plans," the statement said.