A child suffering from Dengue fever lies on a bed at Kantha Bopha hospital Phnom Penh in this June 18, 2007 file photo. Dengue -- which causes fever, headaches and agonising muscle and joint pains -- has killed 389 people in Cambodia this year, nearly all of them children, in what is believed to be one of the worst outbreaks in years. There is no vaccine for dengue but even if a treatment existed, the Health Ministry, which has an annual budget of $3 for each of Cambodia's 13 million people, would struggle to afford it. To match feature DENGUE-CAMBODIA/