A child receives the RTS,S malaria vaccine in Gisambai, Kenya in March
YASUYOSHI CHIBA/AFP/Getty Images
Forty-two countries or territories have been certified malaria-free by the World Health Organization (WHO). This has been widely attributed to the use of mosquito nets and insecticides, as well as effective diagnosis and treatment of the parasitic disease.
But with climate change creating new breeding grounds for malaria-carrying mosquitoes and the deployment of an effective vaccine being too expensive for many countries, eliminating malaria from the world is no simple task.