Initially, annual hepatitis A mortality was regressed on the Human Development Index (HDI) for each country classified as an emerging and growth-leading economy (EAGLE) to provide an overview of how (1) Dynamic transmission model(1) Human Development Index(1) Hepatitis A vaccination policy(1) Incremental cost-effectiveness ratio.(1) Epidemiology(1) Regression results show a constant decline of mortality as HDI increased. For each increase of one in HDI value in this hypothetical country, mortality rate declined by 2.3016 deaths per 100,000 peop(1) Comparative effectiveness analysis(1) Many world regions are developing quickly and experiencing increasing levels of sanitation, causing an epidemiological shift of hepatitis A in these areas. The shift occurs when children avoid being (1) Linear regression.(1) environmental(1) Emerging and growth-leading economies(1) Hepatitis A vaccination strategies(1)