The world must wake up to the scale of the earthquake disaster in the mountains of Pakistan and do more to help or many more lives will be lost in the coming winter, the head of the U.N. children's agency said on Sunday, Reuters reported. Aid donors have provided $120 million for a massive relief effort for survivors of the Oct. 8 quake that killed more than 55,000 people and seriously injured about 78,000. But that is far short of the $550 million the United Nations has asked for. "It's very important for the world to understand how impacted this area really is, how huge this tragedy is, and how many people are still threatened because of the oncoming winter," the executive director of UNICEF, Ann Veneman, said. Veneman was addressing a news conference in Muzaffarabad, the ruined capital of the Pakistani part of the Kashmir region. She visited the hard-hit town of Balakot and a school where 84 girls were killed in Muzaffarabad. The earthquake had had a disproportionate impact on children, she said, and many were without the shelter, food and medical care necessary to get them through a harsh Himalayan winter. --More 2011 Local Time 1711 GMT