Zhang Qingyun (L), a nurse at Tongren chronic disease control and prevention hospital, talks with patient Wen Changtai at the hospital in Tongren County, Huangnan Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Jan. 21, 2015. The Tongren chronic disease control and prevention hospital is the only professional leprosary in Qinghai, where leprosy, also known as Hansen's disease, used to be prevalent before the founding of the country. Now the disease has been effectively controlled, and the incidence rate has decreased significantly. The 62nd World Leprosy Day will be observed worldwide on Jan. 25, 2015. (Xinhua/Wu Gang)
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