A positive nucleic acid test doesn't mean discharged patients are re-infected. They should also have fever and progression in a chest X-ray, said Yan Xiaowei, professor and deputy chief of Department of Internal Medicine at Peking Union Medical College Hospital, on Monday at a press conference in Wuhan held by the State Council Information Office.

Patients will receive follow-up checks two weeks and four weeks after they are discharged from hospital. They will also be monitored by local inspectors. They will be asked to isolate themselves at home for at least 2 weeks and take their temperature twice a day. If the temperature relapses, the patients will be sent to hospital for a chest CT scan and nucleic acid detection, Yan said.

There is no data regarding COVID-19 as it relates to the weather, added Cao Wei, deputy director and associate chief physician of the Department of Infectious Diseases at Peking Union Medical College Hospital.