Country-specific influenza respiratory mortality rates by quartile, all ages, multiple countries. A) US Centers for Disease Control and Prevention (CDC); B) Global Pandemic Mortality Project (GLaMOR); C) Institute for Health Metrics and Evaluation (IHME). Mortality rate per 100,000 population. Study periods: CDC, 1999–2015; GLaMOR, 2002–2011; IHME, 1980–2016. Rates for 183 countries included. Lighter colors indicate a lower mortality rate.