As relief efforts continue in the Kathmandu Valley, the UN says the response is broadening to include areas such as Dhading and Gorkha.
The 7.8 quake has claimed more than 5,000 lives. Many survivors remain in desperate need of food and water.
Thousands of people are queuing to board buses and leave the capital, amid fears of further aftershocks.
The government is providing free transport for Kathmandu residents hoping to travel to their hometowns. School buses have been sent to supplement overstretched services.
On Wednesday, police at the main bus station scuffled with people who had gathered there hoping to leave.
At the scene: Sanjoy Majumder, BBC News, Kathmandu
There's a rush to get out of Kathmandu. Thousands of people are trying to flee - some trying to head out to the remote districts to see how their families are, others including tourists trying to head towards India by road.
But there simply aren't enough buses to take them out and the highways are choked with vehicles
, people and relief convoys. Tempers are flaring. The police came to the bus station to restrain those trying to board crowded buses, which made it worse.
Outside Kathmandu airport, there are lines of tourists trying their best to get a ticket to fly home. The airlines have laid on extra flights but it's not enough and also, the airport is finding it hard to cope with the additional rush as well as the influx of cargo aircraft bringing in relief material.
There's a rush to get out of Kathmandu. Thousands of people are trying to flee - some trying to head out to the remote districts to see how their families are, others including tourists trying to head towards India by road.
But there simply aren't enough buses to take them out and the highways are choked with vehicles
, people and relief convoys. Tempers are flaring. The police came to the bus station to restrain those trying to board crowded buses, which made it worse.
Outside Kathmandu airport, there are lines of tourists trying their best to get a ticket to fly home. The airlines have laid on extra flights but it's not enough and also, the airport is finding it hard to cope with the additional rush as well as the influx of cargo aircraft bringing in relief material.
