Health in Mongolia Health in Mongolia Since 1990, key health indicators in Mongolia like life expectancy and infant and child mortality have steadily improved, both due to social changes and to improvement in the health sector. Yet, adult health deteriorated during the 1990s and the first decade of the 21st century and mortality rates increased significantly. Smallpox, typhus, plague, poliomyelitis, and diphtheria were eradicated by 1981. The Mongolian Red Cross Society focusses on preventative work. The Confederation of Mongolian Trade Unions established a network of sanatoriums. Serious problems remain, especially in the countryside. According to a 2011 study by the World Health Organization,
Establishment of the World Health Organization and would be managed. The constitution of the World Health Organization had been signed by all 61 countries by 22 July 1946, which an article in "Science" described as "an historic day". It thus became the first specialised agency of the United Nations to which every member subscribed. Its constitution formally came into force on the first World Health Day on 7 April 1948, when it was ratified by the 26th member state. The transfer was authorized by a Resolution of the General Assembly. The "Office International d'Hygiène Publique" was incorporated into the Interim Commission of the World Health Organization