Ngozi Okonjo-Iweala, chair, board of Global Alliance for Vaccine and Immunisation (GAVI), says she almost lost her son to typhoid after her cousin died of the same disease. Okonjo-Iweala, who
Ngozi Okonjo-Iweala, chair, board of Global Alliance for Vaccine and Immunisation (GAVI), says she almost lost her son to typhoid after her cousin died of the same disease. Okonjo-Iweala, who