Medical team members of the First People's Hospital of Changde City prepare to leave for Hubei Province in Changde, central China's Hunan Province, Feb. 15, 2020. The second batch of 30 health workers of Changde City of Hunan Province left for Hubei Province on Saturday to aid the novel coronavirus control efforts there. (Xinhua/Chen Sihan

Medical team members of the First People's Hospital of Changde City prepare to leave for Hubei Province in Changde, central China's Hunan Province, Feb. 15, 2020. The second batch of 30 health workers of Changde City of Hunan Province left for Hubei Province on Saturday to aid the novel coronavirus control efforts there. (Xinhua/Chen Sihan

Medical team members of the First People's Hospital of Changde City prepare to leave for Hubei Province in Changde, central China's Hunan Province, Feb. 15, 2020. The second batch of 30 health workers of Changde City of Hunan Province left for Hubei Province on Saturday to aid the novel coronavirus control efforts there. (Xinhua/Chen Sihan

Medical team members of the First People's Hospital of Changde City prepare to leave for Hubei Province in Changde, central China's Hunan Province, Feb. 15, 2020. The second batch of 30 health workers of Changde City of Hunan Province left for Hubei Province on Saturday to aid the novel coronavirus control efforts there. (Xinhua/Chen Sihan