Health workers from Zhangzhou epidemic prevention station perform decontamination work at Yueyuan village of Zhouqu County, northwest China's Gansu Province, Aug 14, 2010. More than 200 medical workers have been dispatched to the site since the distaster happened. [Xinhua]

Health workers from Zhangzhou epidemic prevention station perform decontamination work at Yueyuan village of Zhouqu County, northwest China's Gansu Province, Aug 14, 2010. [Xinhua]