A two-week-old baby died of hypothermia in Gaza as heavy rains and floods overwhelmed tents and damaged hospitals, following reports that storms had flooded makeshift camps and collapsed war-weakened buildings.Aid groups and local authorities warned that insufficient winterized shelter and supplies have reached Gaza amid continued restrictions on crossings and disputed aid-delivery figures, after U.N. satellite analysis found nearly 80 percent of buildings destroyed or damaged in the war.ActionAid and other organizations urgently called for border openings and increased shipments of insulated tents, blankets and medical supplies as thousands of partially damaged homes remain at risk of collapse and humanitarian needs rise.