GHANJ, Afghanistan (Reuters) - An international aid official said on Tuesday last week's earthquake in northern Afghanistan had claimed about 4,200 lives and bad weather was hindering delivery of humanitarian aid to survivors. Some of the survivors in this remote village told the first group of reporters to reach the disaster area they would soon start dying of hunger unless food arrived quickly. Ghanj was said by Afghan and aid officials to be the worst hit of up to 28 villages in the country's northern region of Rustaq where aftershocks were still being felt on Monday. "The main problem is now the weather," said Sheila Hall, medical coordinator for Medicins Sans Frontieres, who said the agency's estimate for total dead was now 4,200. "We've a lot of medical supplies on the way -- but it's only on the way," she told Reuters in the regional centre of Rustaq. She said two Red Cross aircraft had been unable to reach the area on Tuesday because of bad weather. She added that a lack of transport made it difficult for Afghans from remote villages to reach Rustaq for aid and medical help.