The University of Oxford Jenner Institute, which developed the vaccine, estimates that malaria kills around 800,000 people per annum.
These casualties occur predominantly in sub-Saharan Africa, where one in five childhood deaths is associated with the disease.
The WHO assessed that 241 million clinical cases of malaria occurred in 2020, resulting in 627,000 deaths, mostly among children in Africa.
A health worker vaccinates a child against malaria in Ndhiwa, Homabay County, western Kenya on September 13, 2019 during the launch of malaria vaccine in Kenya.
Brian Ongoro | AFP | Getty ImagesIn 2021, the WHO signed off on GSK's RTS,S malaria vaccine for rollout across sub-Saharan Africa, following pilot programs in Ghana, Kenya and Malawi, which tracked 800,000 children since 2019.