The World Health Organization (WHO) was established on April 7, 1948. Created as a specialized agency of the United Nations, its mission is to promote global health, ensure health security, and improve healthcare systems worldwide. The WHO focuses on various health issues, including disease prevention, vaccination campaigns, and responding to health emergencies, such as pandemics. Its formation was a response to the need for coordinated international efforts to combat global health challenges, emphasizing the importance of cooperation among nations to address health disparities. The WHO plays a crucial role in setting health standards and guidelines that affect global public health policies.