Medical workers attend to a patient infected with the novel coronavirus pneumonia in Tongji Hospital in Wuhan, Hubei province, on Feb 22, 2020. (Photos: China Daily)

A medical worker attends to a patient infected with the novel coronavirus pneumonia in Tongji Hospital in Wuhan, Hubei province, on Feb 22, 2020.

A medical worker attends to a patient infected with the novel coronavirus pneumonia.

A doctor checks a patient's lungs scan image of computerized tomography.