The world commemorates humanitarian workers killed and injured in the course of their work, as well as honour all aid and health workers who continue to provide life-saving support and protection to people most in need.
The day was created in memory of the bomb attack on 19th August 2003 on the Canal Hotel in Iraq, killing 22 people, including the chief humanitarian in Iraq, Sergio Viera de Mello. It was formalised by the UN General Assembly in 2009.