A survivor smiles as she carries a bag of rice donated by the U.N. during a distribution of food operation in downtown Port-au-Prince February 2, 2010. Aid groups and troops from around the world have struggled to distribute food, water and medical care to an estimated 3 million Haitians injured or left homeless in the 7.0-magnitude earthquake that wrecked much of Haiti's capital on Jan. 12, killing as many as 200,000 people. REUTERS/Eduardo Munoz (HAITI - Tags: DISASTER)