Another 400 million doses of Covid-19 vaccines have been secured for the African continent through the Serum Institute of India, the Africa Centres for Disease Control and Prevention (CDC) said, AP reports.

With the new doses, on top of the 270m doses announced earlier this month from Pfizer, AstraZeneca and Johnson & Johnson, “I think we’re beginning to make very good progress,” Africa CDC director John Nkengasong told reporters. He said the new doses were announced in a meeting hosted by South Africa’s president on Wednesday.

An Africa CDC spokesman said the 400m doses are of the Oxford-AstraZeneca vaccine. As with many vaccine deals, there were no immediate details on cost or how much people might pay per dose.