John N. Nkengasong is a Cameroonian-American virologist serving as the Global AIDS Coordinator in the Biden administration since 2022. He previously worked as the Director of the Africa Centres for Disease Control and Prevention from 2016 to 2022, as well as at the World Health Organization (WHO) and Centers for Disease Control and Prevention. During the COVID-19 pandemic, Nkengasong was appointed the WHO Special Envoy for Africa.