A medical team member (R) says goodbye to his family before leaving for Hubei at Shenyang Taoxian International Airport in Shenyang, capital of northeast China's Liaoning Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Long Lei)

Staff members load baggages of medical team members to an airplane at Shenyang Taoxian International Airport in Shenyang, capital of northeast China's Liaoning Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Long Lei)

Members of the fourth medical team of Shanxi swear an oath before leaving for Hubei Province at Wusu International Airport in Taiyuan, capital of north China's Shanxi Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Cao Yang)

Medical team members of the Second Hospital of Shangdong University leave for Hubei Province in Jinan, capital of east China's Shandong Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Zhu Zheng)

Members of the fourth medical team of Shanxi wave goodbye to their family members and colleagues before leaving for Hubei Province at Wusu International Airport in Taiyuan, capital of north China's Shanxi Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Cao Yang)

A medical team member (R) of the Second Hospital of Shangdong University prepares to leave for Hubei province in Jinan, capital of east China's Shandong Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Zhu Zheng)

Medical team members of the Second Hospital of Shangdong University prepare to leave for Hubei Province in Jinan, capital of east China's Shandong Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Zhu Zheng)

Members of the fourth medical team of Shanxi hug their colleagues before leaving for Hubei Province at Wusu International Airport in Taiyuan, capital of north China's Shanxi Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Chai Ting)

Medical team members of the Second Hospital of Shangdong University swear an oath before leaving for Hubei Province in Jinan, capital of east China's Shandong Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Zhu Zheng)

Medical team members of the Second Hospital of Shangdong University pose for a group photo before leaving for Hubei province in Jinan, capital of east China's Shandong Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Zhu Zheng)

Family members wave goodbye to medical team members at Shenyang Taoxian International Airport in Shenyang, capital of northeast China's Liaoning Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Long Lei)

Staff members load medical supplies for Hubei Province at Xiaoshan International Airport in Xiaoshan District of Hangzhou City, east China's Zhejiang Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Photo by Tan Shenjie/Xinhua)

Medical team members from Xiamen of southeast China's Fujian Province pose for a group photo with flight attendants before leaving for Hubei province at Xiamen Gaoqi International Airport in Xiamen of Fujian, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua)

Medical team members of Sichuan board an airplane before leaving for Hubei Province at Chengdu Shuangliu International Airport in Chengdu, capital of southwest China's Sichuan Province, Feb. 9, 2020. Medical teams from across China have been rushing to Hubei Province to aid the novel coronavirus control efforts there. (Xinhua/Wang Xi)