The World Health Organization was founded on the principle of universal health coverage and achieving the highest level of health for all people. World Health Day on April 7th aims to inspire and guide countries toward achieving universal health coverage through a series of events in 2018. Currently half the world's population lacks access to needed health services, and countries need to extend coverage to one billion more people by 2023 to meet global targets. World Health Day will highlight the need for universal coverage and benefits it provides.