Pakistani and UN officials say that deadly water-borne diseases are on the rise among victims of the country's worst floods in history. As President Zardari put it, Pakistan could take years to recover from the natural disaster that has displaced millions of people across the country.Pakistani troops, local charities and UN and international agencies are trying to provide food, medicine and shelter to victims of the country's worst floods in history. But, nearly a month after the disaster hit Pakistan, humanitarian workers say millions of flood ravaged people have received little or no help. Prime Minister Yousuf Raza Gilani told a meeting of Health workers that the Government has so far distributed two hundred tonnes of medicines and supplies to more than two million people. But, he said that Pakistan on its own cannot respond to what he described enormous help needs of the flood victims because of the damage the floods have caused. The United Nations has said the aid operation in Pakistan urgently needs 40 helicopters to get supplies to people cut off by floods. A leading UN aid official said, 800,000 Pakistanis could be reached only by air.