International Office of Public Hygiene
The International Office of Public Hygiene (OIPH), also known by its French name as the Office International d'Hygiène Publique (OIHP), was an international organization founded 9 December 1907 and based in Paris, France. It merged into the World Health Organization in 1946.
Source: Wikipedia — International Office of Public Hygiene (CC BY-SA 4.0)