World Health Day international, regional and local events on the Day related to a particular theme. World Health Day is acknowledged by various governments and non-governmental organizations with interests in public health issues, who also organize activities and highlight their support in media reports, such as the Global Health Council. World Health Day is one of eight official global health campaigns marked by WHO, along with World Tuberculosis Day, World Immunisation Week, World Malaria Day, World No Tobacco Day, World AIDS Day, World Blood Donor Day, and World Hepatitis Day. In 2006, World Health Day was devoted to the health workforce crisis, or
Public health emergency (United States) activation, a public health emergency may include but is not limited to, public health emergencies declared by the Secretary of HHS [Health and Human Services] under 42 U.S.C. 247d, or a declaration of a major disaster or emergency under the Robert T. Stafford Disaster Relief and Emergency Assistance Act (Stafford Act), 42 U.S.C. 5121-5206)."" The declaration of public health emergency in the March 2009 flood of the Red River in North Dakota was made under section 319 of the Public Health Service Act. Under section 1135 of the Social Security Act, this declaration permits the state government to request waivers