Pfizer has committed to sending 4.5 million doses of its COVID-19 vaccine to South Africa by June, with some 300,000 set to arrive Sunday, Health Minister Zweli Mkhize has announced.

Why it matters: South Africa is battling the worst coronavirus outbreak on the continent and has struggled with a low vaccine supply, per Bloomberg. The country is also grappling with a dangerous variant of the virus.

Details: Shipments of Pfizer doses will arrive in the country on a weekly basis until June, Mkhize said.

• In addition to the Pfizer doses, South Africa expects for stocks of the Johnson&Johnson vaccine—the release of which paused last month following safety concerns—to be released by mid-May.

Go deeper:African countries struggle to deliver the few shots they've got