The Third World Health Assembly of the World Health Organization of the United Nations, held at the Palais des Nations in Geneva, was attended by delegates from 57 member states. This annual meeting of delegates from nearly all the noncommunist nations of the world assures the continuity of cooperation in public health and determines the strategy for the international offensive against the major diseases. The Assembly is the responsible authority directing the work of the World Health Organization.
International health cooperation in the post World War II period entered a new era in June 1946, when an International Health Conference, convened in New York City by the United Nations, prepared and adopted the Constitution of the World Health Organization. The preamble of the WHO constitution defines health as a "state of complete physicial, mental and social well-being and not merely the absence of disease or infirmity." The constitution recognizes that