The WHO is a specialized agency established by the UN in 1945, which brought together three previously existing international organizations dealing with public health, emergency relief, and the like. With the coming into force of the organization's constitution in 1948, the WHO, headquartered in Geneva, was formally up and running.
WHO 是一九四五年聯合國提案成立的衛生領域專門機構，統籌過去三個相關國際機構負擔的公共衛生及緊急衛生等工作，一九四八年，「世界衛生組織憲章」生效，WHO 正式成立，總部設在日內瓦。