(Writes through, adds WHO details in paragraphs 6, 7) BEIJING, Sept 21 (Reuters) - A Hong Kong girl was found to have a kidney stone after drinking tainted milk and Brunei banned imports of Chinese milk products as the World Health Organisation stepped in to help contain a widening milk scandal. Hong Kong health authorities said in a statement issued late on Saturday that the girl did not have any symptoms, but had a checkup after consuming Yili brand milk beverage daily for the past 15 months. The three-year-old girl was the territory's first suspected victim of a scandal that has sparked an outcry from China's trading partners. While Brunei's health ministry said the country does not directly import dairy items from China, the ban took effect after similar moves by Singapore and Malaysia on Friday. Yili Industrial Group Co <600887.SS>, the Sanlu Group -- the country's largest infant milk powder maker -- along with 19 other dairy producers vowed to improve the quality of their products and make appropriate reparations to victims, state media reported on Sunday. World Health Organisation (WHO) said on Sunday it was helping China investigate and contain the contamination of milk products by melamine, a chemical that can cause kidney stones and lead to renal failure among children. "The capacity for quality control and also the surveillance, reporting systems and laboratory testing in the area must be improved," Shigeru Omi, WHO director for Western Pacific region, told reporters. China last week ordered checks on dairy products and a nationwide recall of suspect products, in a spreading scandal that has killed four children and caused thousands more to fall ill from consuming dairy products. The Hong Kong girl was discharged from hospital on Saturday. Samples of the product consumed by the girl were found to have been adulterated with melamine. "Her condition is good. She did not receive any operation," said a spokeswoman for the Princess Margaret Hospital. A government food quality watchdog in China has said nearly 10 percent of milk and drinking yoghurt samples from three major dairy companies contained potentially deadly melamine. The nitrogen-rich compound can be added to watered-down milk to get past quality inspections, which check for nitrogen to measure protein levels. (Reporting by Jeffrey Hodgson in Hong Kong, Kirby Chien in Beijing, David Chance in Kuala Lumpur and by Manny Mogato in Manila)
A farmer cries after her fresh milk was poured away due to the closure of a milk factory on the outskirts of Wuhan, Hubei province September 20, 2008. China ordered widespread ...
