The World Health Organization is the "directing and coordinating authority for health within the United Nations system. It is responsible for providing leadership on global health matters, shaping the health research agenda, setting norms and standards, articulating evidence-based policy options, providing technical support to countries and monitoring and assessing health trends."[1]
The World Health Organization constitution was adopted on July 22 1946 at an International Health Conference convened by the United Nations Economic and Social Council, and came into force on April 7 1948.[2]