my guest is ngozi okonjo—iweala.s a special covid—19 envoy for the african union as well as being chair of gavi — the global alliance on vaccines and immunisations. as the world races to find a vaccine, what is she doing to ensure that lower income countries are not forgotten? dr ngozi okonjo—iweala, welcome to hardtalk. thank you, zeinab. so, in april the world health organization was warning that within 3—6 months there could be 10 million covid—19 cases on the continent. we are now roughly at around 700,000 cases, nearly 15,000 deaths, it looks like an extreme exaggeration. the experts can't get it right, can they? well, zeinab, we just don't know. according to the africa cdc in addis, the cases are accelerating in africa and about 100,000 a week now. so we have not reached our peak on the continent and we don't know the trajectory of this pandemic yet. but the fact of the matter is you may never know because testing is so sparse in africa. i mean, some countries — ghana, senegal in the west are doing pretty well