Islamabad , Pakistan ( CNN ) -- The United Nations has established more than a thousand health clinics across Pakistan in the wake of widespread flooding , a U.N. official said . `` Almost 1,200 mobile health clinics are operating across Pakistan , '' said Maurizio Giuliano with the Office for the Coordination of Humanitarian Affairs . `` For many people , this is the only way to receive health care . '' Water-borne illnesses from contaminated flood waters have erupted nationwide . At least 1 million Pakistanis have crippling diarrhea or respiratory infections . About 65,000 cases of malaria have been reported . `` More than 2 million people have received health care through this system , especially for diarrhea diseases , acute respiratory infections , skin and eye disease , '' he said . `` These clinics reach even the remotest areas with teams sometimes walking for six hours and carrying 20 kilograms [ 44 pounds ] of medical supplies on their backs . '' The death toll in the country has climbed to 1,738 , the Pakistan Disaster Authority said over the weekend . Officials said last week that 17 million have been affected nationwide . The death toll is expected to rise significantly as flood waters continue to recede and more bodies surface . Pakistani flood victims face perilous journey home . On Friday , U.S. President Barack Obama issued a presidential order authorizing emergency funds to Pakistan 's flood victims , the White House said . The president said the use of the Emergency Refugee and Migration Assistance Fund was in the United States ' interest . Up to $ 33 million can go toward the country 's crisis . The United Nations warned that a crisis is building in the eastern province of Balochistan , where nearly 2 million people are affected . There is a `` humanitarian tragedy '' with immediate threats of water-borne diseases and food shortages , said Mengeshe Kebede , the Office of the U.N. High Commissioner for Refugees ' representative to Pakistan . `` We need to scale up our activities in the province , or else I think we are heading for a major humanitarian disaster there , '' Kebede said . `` I have worked in humanitarian situations globally , and worked in refugee camps in Africa during emergencies , but to be honest I had never seen a situation as devastating as I saw in Balochistan , '' he said . CNN 's Samson Desta contributed to this story .
The flooding death toll is 200 . At least 1 million people have been affected by the floods . At least 1 million Pakistanis have crippling diarrhea or respiratory infections .