A medical worker returned from virus-hit Hubei Province receives temperature checking at Chongqing Jiangbei International Airport in southwest China's Chongqing, March 18, 2020. Medical assistance teams started leaving Hubei Province as the epidemic outbreak in the hard-hit province has been subdued. (Xinhua/Liu Chan)

Medics supporting virus-hit Hubei Province take buses after arriving at Chongqing Jiangbei International Airport in southwest China's Chongqing, March 18, 2020. Medical assistance teams started leaving Hubei Province as the epidemic outbreak in the hard-hit province has been subdued. (Xinhua/Liu Chan)

Medics supporting virus-hit Hubei Province receive temperature checking after their arrival at Chongqing Jiangbei International Airport in southwest China's Chongqing, March 18, 2020. Medical assistance teams started leaving Hubei Province as the epidemic outbreak in the hard-hit province has been subdued. (Xinhua/Liu Chan)

Medics supporting virus-hit Hubei Province take buses after arriving at Chongqing Jiangbei International Airport in southwest China's Chongqing, March 18, 2020. Medical assistance teams started leaving Hubei Province as the epidemic outbreak in the hard-hit province has been subdued. (Xinhua/Liu Chan)

Medics returned from virus-hit Hubei Province arrive at Chongqing Jiangbei International Airport in southwest China's Chongqing, March 18, 2020. Medical assistance teams started leaving Hubei Province as the epidemic outbreak in the hard-hit province has been subdued. (Xinhua/Liu Chan)