Mark Rweyemamu is the executive director of the SACIDS (Southern African Centre for Infectious Disease Surveillance) Foundation for One Health located at the Sokoine University of Agriculture, Morogoro, Tanzania. He is a veterinarian and specialist in infectious diseases, who has worked in government, industry academia. He is a visiting professor at the College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, Morogoro, Tanzania and at the Royal Veterinary College, University of London, UK. Formerly, he was head of the Infectious Diseases Programme of the UN Food and Agriculture Organization (FAO), which included the coordination of the Global Rinderpest Eradication Programme (GREP). Before moving to FAO Headquarters, he had set up the Pan African Veterinary Vaccine Centre (PANVAC) in Addis Ababa, Mark's current area of research interest is infectious diseases through a One Health approach. The SACIDS Theory of Change for global health security focuses on Community Level One Health Security.