Eight million people have been affected by the massive earthquake in Nepal - more than a quarter of the country's population - the United Nations says.
International aid has started arriving but there is still huge need - 1.4 million require food aid, the UN said.
The 7.8-magnitude quake hit Nepal on Saturday destroying buildings in Kathmandu and severely affecting rural areas across the region.
The death toll has risen to 4,310, with almost 8,000 injured, officials say.
But Prime Minister Sushil Koirala has warned the toll could reach 10,000, telling Reuters news agency the government was on a "war footing".
Nepal and surrounding areas have continued to experience aftershocks. Thousands in Kathmandu, Nepal's capital, spent a third night outside, too afraid to go back into their houses.
Water, food and electricity are in short supply and there are fears of outbreaks of disease.
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