A medical team member (L) makes a video phone call with her family before leaving for Wuhan, the epicenter of the coronavirus outbreak, in Lanzhou, northwest China's Gansu Province, Feb. 4, 2020. The second batch of a medical team comprised of 100 members from Gansu Province left for Wuhan in the early morning on Wednesday to aid the novel coronavirus control efforts there. (Photo by Du Zheyu/Xinhua)