Universal health coverage evolution, ongoing trend, and future challenge: A conceptual and historical policy review

The goal of universal health coverage (UHC) from the United Nations (UN) has metamorphized from its early phase of primary health care (PHC) to the recent sustainable development goal (SDG). In this context, we aimed to document theoretical and philosophical efforts, historical analysis, financial and political aspects in various eras, and an assessment of coverage during those eras in relation to UHC in a global scenario. Searching with broad keywords circumadjacent to UHC with scope and inter-disciplinary linkages in conceptual analysis, we further narrated the review with the historical development of UHC in different time periods. We proposed, chronologically, these frames as eras of PHC, the millennium development goal (MDG), and the ongoing sustainable development goal (SDG). Literature showed that modern healthcare access and coverage were in extension stages during the PHC era flagshipped with “health for all (HFA)”, prolifically achieving vaccination, communicable disease control, and the use of modern ...