Un bambino sottoposto a vaccinazione anti-polio a Multan, Pakistan

(AP Photo/K.M.Chaudary)

A Pakistani volunteer administers an oral polio vaccine to a boy who survived heavy flooding in Multan, Pakistan, Tuesday, Aug. 10, 2010. The U.N., relying on Pakistani figures, says the number of people affected by flooding over the past two weeks is 13.8 million, more than the combined total of the 2004 Indian Ocean tsunami, the 2005 Kashmir earthquake and the 2010 Haiti earthquake, although the death toll in each of those disasters was much higher than the 1,500 people killed in the floods.