two core functions of the world health organization (who) are
World Health Organization The constitution of the World Health Organization had been signed by 61 countries on 22 July 1946, with the first meeting of the World Health Assembly finishing on 22 July 1946. It incorporated the Office International d'Hygiène Publique and the League of Nations Health Organization. Since its establishment, it has played a leading role in the eradication of smallpox. Its current priorities include communicable diseases, in particular HIV/AIDS, Ebola, malaria and tuberculosis; the mitigation of the effects of non-communicable diseases such as sexual and reproductive health, development, and aging; nutrition, food security and healthy eating; occupational health; substance abuse; and driving the development of reporting, publications, and networking.
United Nations System The United Nations System consists of the United Nations, and the six principal organs of the United Nations: the General Assembly, Security Council, Economic and Social Council (ECOSOC), Trusteeship Council, International Court of Justice (ICJ), and the UN Secretariat,[1] specialized agencies, and affiliated organizations.[2] The executive heads of some of the United Nations System organizations and the World Trade Organization, which is not formally part of the United Nations System,[3][4][5] have seats on the United Nations System Chief Executives' Board for Coordination (CEB).[6] This body, chaired by the Secretary-General of the United Nations, meets twice a year to co-ordinate the work of the organizations of the United Nations System.