A doctor operates on a hydatid disease patient at Lhasa People's Hospital in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 31, 2020. Hydatid disease, or echinococcosis, a parasitic disease caused by tapeworm, is a problem for residents of herding areas in western China. Without treatment, the death rate of the disease is as high as 94 percent. As a major pastoral area, Tibet Autonomous Region reports one of the world's highest frequencies of echinococcosis infections. (Xinhua/Zhang Rufeng)

Doctors check the CT image of a hydatid disease patient before operation at Lhasa People's Hospital in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 31, 2020.

Doctors operate on a hydatid disease patient at Lhasa People's Hospital in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 31, 2020.

Doctors discuss before operation at Lhasa People's Hospital in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 31, 2020.