At least 30,000 people died in the earthquake that struck Turkey and Syria on February 6, according to a latest report established on Sunday.
A figure that will undoubtedly "
double or more
", alerted the head of the UN humanitarian agency, Martin Griffiths, on Saturday.
The United Nations has warned that at least 870,000 people urgently need hot meals in Turkey and Syria.
Up to 5.3 million are currently thought to be homeless in Syria alone.
On Sunday, the death toll stood at 33,179.
Faced with the scale of the victims, the WHO has launched an appeal for donations.