WUHAN, China (Caixin) -- Zhang Qi was planning to spend a week of leisure in Wuhan when he arrived Jan. 21. It looked like any other day in the historic, prosperous central China metropolis of 11 million people.
Radiologist: 'I've never seen a virus grow so quickly; the speed is stunning'

Medical staff use a stretcher to move a patient in front of the Wuhan No. 7 Hospital on Feb. 2. (Photo by Ding Gang/ Caixin)
WUHAN, China (Caixin) -- Zhang Qi was planning to spend a week of leisure in Wuhan when he arrived Jan. 21. It looked like any other day in the historic, prosperous central China metropolis of 11 million people.