Africa's top public health body has urged all those purchasing Covid-19 vaccines for use on the continent to place orders with South Africa's Aspen Pharmacare, which is facing closure due to lack of demand.
Last November, Aspen negotiated a licensing deal to package and sell Johnson & Johnson's vaccine for distribution across Africa.
The deal was seen as a major boost for African countries which received far fewer doses than richer parts of the world and where vaccination rates are low.
The Africa Centre for Disease Control said it was doing everything it could to prevent Aspen closing its facility due to a lack of orders.