Despite global progress in understanding the epidemiology of the human immunodeficiency virus (HIV), knowledge about the epidemic in the Middle East and North Africa (MENA) remains limited and subject to much controversy. In the more than 25 years since the discovery of HIV, no scientific study has provided a comprehensive, data-driven synthesis of the spread of HIV/AIDS (acquired immunodeficiency syndrome) in the region. Consequently, the effectiveness of policies, programs, and resources intended to address the spread of HIV/AIDS has been compromised. This report aims to fill the knowledge...