The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. It is part of the U.N. Sustainable Development Group. The WHO Constitution, which establishes the agency’s governing structure and principles, states its main objective as ensuring «the attainment by all peoples of the highest possible level of health.» It is headquartered in Geneva, Switzerland, with six semi-autonomous regional offices and 150 field offices worldwide.
The WHO was established in 7 April 1948, which is commemorated as World Health Day. The first meeting of the World Health Assembly (WHA), the agency’s governing body, took place on 24 July 1948. The WHO incorporated the assets, personnel, and duties of the League of Nations’ Health Organisation and the Office International d’Hygiène Publique, including the International Classification of Diseases. Its work began in earnest in 1951 following a significant infusion of financial and technical resources.
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