1. Africa Centers for Disease Control and Prevention, ., 2022. Yellow fever: Recent outbreaks in Africa, URL https://africacdc.org/disease/yellow-fever/.
2. Africa Centers for Disease Control and Prevention, ., 2022. Cholera: Recent outbreaks in Africa. URL https://africacdc.org/disease/cholera/.
3. Africa Centers for Disease Control and Prevention, ., 2022. Measles: Recent outbreaks in Africa. URL https://africacdc.org/disease/measles/.
4. Airports Council International Africa, ., 2022. Air traffic statistics. URL https://www.aci-africa.aero/data-centre/air-traffic-statistics/.
5. Projecting the benefits of antiretroviral therapy for HIV prevention: The impact of population mobility and linkage to care;Andrews;J. Infect. Dis.,2012