Dar, Osman, Alimuddin Zumla, Lara Hollmann, Mishal Khan, Raji Tajudeen, and Fazal Karim Dar. “Variations in Climate and Global Spread of COVID-19: Implications for Control in Tropical and Warmer Climates”. Journal of Public Health in Africa (September 4, 2020). Accessed September 18, 2020. https://publichealthinafrica.org/index.php/jphia/article/view/1399.