World Health Day is celebrated on 7 April every year to mark the anniversary of the founding of WHO in 1948. Each year a theme is selected that highlights a priority area of public health.
The Day provides an opportunity for individuals in every community to get involved in activities that can lead to better health. The World Health Day is held to mark WHO's founding, and is seen as an opportunity by the organization to draw worldwide attention to a subject of major importance to global health each year.
The WHO organizes international, regional and local events on the Day related to a particular theme. World Health Day is one of eight official global public health campaigns marked by WHO, along with World Tuberculosis Day, World Immunization Week, World Malaria Day, World No Tobacco Day, World Blood Donor Day, World Hepatitis Day, and World AIDS Day