Weather conditions improved in Pakistan's portion of Kashmir, allowing two helicopters to leave from the main city of Muzaffarabad for the first time in two days, said Pakistan's army, which has been delivering winter tents, clothes, food and other aid to survivors.

Scores of people - many parents carrying children with respiratory infections - lined up for treatment at the hospital in Muzaffarabad, one of the areas worst-hit by the October 8 quake that killed more than 80,000 people and left 3.5 million homeless.

The UN estimates 2.5 million people are living in tents below 5,000 feet, and as many as 400,000 others are in higher areas where it is feared that snow and rain will make it harder for helicopters and trucks to reach them.

Pakistan army spokesman Maj. Farooq Nasir said soldiers were moving from camp to camp, helping re-erect or replace tents that had collapsed under the weight of snow.

Kyawoo Maung, an official with the UN's World Food Program, said it and other aid agencies had distributed enough food for 15-30 days, and that there was no risk of starvation for now.

CNN