Port-au-Prince , Haiti ( CNN ) -- Survivors still emerged from collapsed buildings in Haiti 's devastated capital Sunday , nearly five days after a 7.0-magnitude earthquake struck the impoverished island nation . U.S. and Turkish rescuers plucked three people , including an American woman , from the rubble of a supermarket Sunday , and were continuing to search for more people in the ruins . The survivors had been living on the store 's supply of food and water , rescuers said . Elsewhere , a team from New York rescued a 55-year-old man from the remains of a four-story building after using a rescue camera to locate him . And an Israel Defense Forces team said Sunday it had rescued a Haitian government worker from the ruins of a customs office Saturday . The rescues lent a sense of urgency to those still working to find signs of life among the collapsed buildings , who know that time is running out for those still alive . Nearly 30 international rescue teams continue to comb the disaster areas for more survivors . While there has not been an official count , U.N. estimates of the number of casualties in the capital alone range from 100,000 to 150,000 . Get the latest developments in Haiti . By Friday , 13,000 bodies had been recovered , said U.N. Assistant Secretary-General for Peacekeeping Edmond Mulet . Among the dead are 16 Americans , the State Department said Sunday . More than 300 U.N. staffers are unaccounted for . Thirty-seven are confirmed dead , including the top two civilian officials at the U.N. mission in Haiti , a peacekeeping and police force established after the 2004 ouster of then-President Jean-Bertrand Aristide . Why Haiti is different . U.N. Secretary-General Ban Ki-moon was in Haiti Sunday and visited the site of the U.N. 's collapsed mission . He assured survivors of U.N. assistance despite the organization suffering the gravest loss in its history . The United Nations `` will continue to work with the major international donors who have been generous enough to provide humanitarian assistance , dispatching search-and-rescue teams . This is a moment of sadness but it is also a moment of Haiti 's need , '' he said . Former President Bill Clinton , the U.N. special envoy to Haiti , will travel to the country on Monday to meet with officials and deliver aid supplies , his foundation announced Sunday . He is set to meet with Haitian President Rene Preval and other members of the local government as well as aid workers , to discuss how to proceed with recovery operations . The visit comes two days after President Obama announced the formation of the Clinton Bush Haiti Fund , a major fundraising effort for victims of Tuesday 's earthquake led by Clinton and former President George W. Bush . Presidents Bush , Clinton team up for Haiti On Saturday , a man said to be the head of the capital city 's tax office was carried out of the rubble on a stretcher , to wild cheers from residents . And a 2-month-old baby with broken ribs was pulled out and airlifted to Florida in critical condition . But in many cases , rescue operations turned into recovery ones . A Los Angeles rescue team answered the desperate pleas of a mother who believed her young daughter was trapped alive beneath the rubble of a day care center in downtown Port-au-Prince . They searched for eight hours Saturday . At some point , the distinct sounds of tapping from within the crushed concrete stopped . As rescue personnel pulled away , the mother -- who stood praying silently during the rescue efforts -- stayed put , holding on to hope . How to help : Impact Your World . More California rescuers patiently chipped away at concrete and debris Sunday morning , trying to reach a woman who sent a text message saying she was buried beneath the ruins of a collapsed bank . The Los Angeles County Search and Rescue team had been looking for the woman since Saturday afternoon when a text arrived : `` I 'm OK but help me , I ca n't take it anymore . '' But the hours ticked by , with no sign she was still alive . Despite the best attempts by aid groups , the country remains in dire need of food , water and medical aid . In open fields , abandoned stadiums and empty warehouses in the capital , relief workers set up makeshift hospitals . Residents flocked to them en masse . Dr. Jennifer Furin with Harvard Medical School was tending to about 300 patients at one such hospital on a U.N. compound near Port-au-Prince 's airport . Without immediate surgery , a third of them will die , she predicted . The Port-au-Prince airport remained overwhelmed by the influx of air traffic bringing in supplies , although an overhead photo Sunday showed activity and numerous planes on the ground .
NEW : Rescue teams from U.S. , Israel , Turkey find people alive in quake rubble . NEW : Nearly 30 teams from around the world continue to search debris for survivors . The secretary - general visits Haiti , site of U.N. 's worst loss of life ever . Port - au - Prince airport remains overwhelmed by planes bringing supplies .