pbr More than 1,100 people have died in the worst floods in Pakistan since 1929. Poor access has hampered relief efforts in Pakistan's northwest, as rescuers worked furiously to help thousands of people hit by massive floods which now headed the country's south and threatened more damage.br ppbr Westerly weather system entering from Iran and Afghanistan combined with monsoon to unleash huge floods that has killed more than one thousand.br ppbr More than 30,000 troops engaged in the relief and rescue activity have rescued over 19,000 people from the marooned areas, but officials conceded people might still be trapped and awaited help in remote areas including Kohistan, Nowshera, Dir and in the Swat valley.br ppbr Army spokesman Major-General Athar Abbas told a news conference late on Saturday virtually no bridge has been left in the Swat valley. All major and minor bridges had been completely destroyed.br ppbr "There was an entire market here. I had a godown in the market, consisting of three rooms. There were goods worth three hundred thousand rupees (approx U.S $3530) in there. All that is gone now. No one has come here to inquire about our wellbeing, no official, no political person. We are having drinking water problems; food is short," a local trader Tariq Sheikh said.br ppbr Aid agencies said more than 500,000 people have been affected by the flash floods and landsliding in the northwest, and women and children were the most at risk, suffering from health and unhygienic conditions.br ppbr Health officials say there is now a real danger of the spread of water-borne diseases like diarrhea, asthma, skin allergies and perhaps cholera in these areas.br ppbr The US embassy in Islamabad said it was providing immediate aid, including two water filtration units and more than 50,000 halal meals for affected areas. The meteorological department has predicted more rains in coming days.