A Pakistani woman displaced by the floods walks along a flooded road holding an axe to cut wood, in Digri district near Hyderabad, Pakistan, on September 19, 2011. The United Nations appealed for $357 million Sunday to help millions of Pakistanis affected by floods that have damaged hundreds of thousands of homes and destroyed millions of acres of crops. #

This photograph taken from a Pakistani Army helicopter shows shows a view of the flood-hit Sanghar district of Sindh province on September 19, 2011. Millions of people have been swamped by a second year of catastrophic floods. One year on from the country's worst-ever floods. #

Pakistani flood-affected people evacuate the flooded area of Kaloi district in Tharparkar by truck on September 17, 2011. The United Nation's children agency said it would distribute 200,000 liters of water to 40,000 people daily and deploy 40 more water tankers in coming days, in a bid to ensure access to clean drinking water and avert diseases. #

A Pakistani mother comforts her son who is suffering from the mosquito-borne disease, dengue fever, at a local hospital in Rawalpindi, Pakistan. Pakistani authorities who are already under pressure to help hundreds of thousands of flood victims, struggling to contain dengue fever which has killed many people and around 4,400 cases have been reported, officials said. #

This photograph taken from a Pakistani Army helicopter shows flood affected villagers seeking refuge on a dry patch in the flood-hit Sanghar district of Sindh province on September 19, 2011. #

Displaced Pakistani villagers living in a camp after their houses were flooded following torrential monsoon rains in Badin near Hyderabad, Pakistan, on Thursday, August 18, 2011. #

Pakistani villagers rescue their livestock as their houses are flooded as a result of torrential monsoon rains over a few days in Tando Mohammad Khan, near Hyderabad in Pakistan's Sindh province, on August 17, 2011. #

Pakistani men cook food for flood-affected people in Tando Bago, a town in Badin, on September 15, 2011. One year after record floods left 21 million Pakistanis reeling, thousands living on the country's southern fertile plains have seen their homes washed away for a second time -- despite the spending of millions of dollars in aid to avert a fresh crisis. #

A pet bear sits among residents who escaped to higher ground from their flooded village in the Tando Allahyar district of Pakistan's Sindh province, on September 15, 2011. #

Pakistani flood-affected villagers ride on a vehicle as they arrive at a safe place in flood-hit Badin district, on September 13, 2011. Pakistan called on the world to speed up relief efforts after torrential rains exacerbated major floods in the south of the country. #

Flood-affected Pakistani villagers block a Hyderabad-Badin road during a protest against the mismanagement of food distribution by the local administration near Hyderabad, on September 20, 2011. #

Villagers load their goats into a rescue boat while fleeing their flooded village of Ali Nawaz Khuso, in the Badin district of Pakistan's Sindh province on September 14, 2011. #

A displaced Pakistani girl sleeps in a makeshift tent after fleeing her house as a result of torrential monsoon rains which flooded Badin near Hyderabad, on Thursday, August 18, 2011. #

A boy, displaced by floods, is silhouetted by the water's edge after escaping to higher ground from his flooded village in the district on Badin, on September 17, 2011. #