Malaria is one of Africa's deadliest diseases, recording 95% of the world's cases. Despite being treatable, it kills nearly 620,000 Africans every year; 76% of those deaths are children younger than five. The world's first malaria vaccine will be deployed from the end of 2023. An initial allocation of 18-million doses will be sent to 12 countries considered to be among those that carry the heaviest burden of the disease. Trials in Ghana, Kenya and Malawi found that there was a 30% reduction in severe malaria infections and a 10% decline in deaths among fully vaccinated children.