On April 7, 1948, the United Nations established a specialized group with the priority of international public health and safety called the World Health Organization.
The World Health Organization (or simply, WHO) was preceded by The League of Nations Health Organization whose covenant stated they would “endeavor to take steps in matters of international concern for the prevention and control of disease, even in cases of dire human hardship.” World War II hindered the efforts of The League of Nations Health Organization and it was decided that a new agency would be put in place.
By July 22, 1946, 61 countries acknowledged by the United Nations had signed the constitution of the World Health Organization, but the constitution didn’t officially come into force until April 7, 1948. April 7 has also come to be known as World Health Day, which celebrates the establishment of the World Health Organization.
The World Health Organization is concerned with communicable diseases, sexual and reproductive health, nutrition and food security, occupational health, substance abuse, and other issues that affect public health around the globe.