Tian et al. (2020), China  Retrospective study/Beijing Emergency Medical Service  262/47.5/48.5% male  Real‐time RT‐PCR  Respiratory specimens  COVID‐19 infected patients/residents of Beijing: 92 (73.3%), patients had been to Wuhan: 50 (26.0%), close contact with confirmed cases: 116 (60.4%), no contact history: 21 (10.9%)  Spectrum of disease: sever: 46 (17.6%); common: 216; (82.4%); mild: 192 (73.3%); nonpneumonia: 11 (4.2%); asymptomatic:13 (5.0%)  Fever (82.1%), cough (45.8%), fatigue (26.3%), dyspnea (6.9%), headache (6.5%)/pulmonary infection, chronic cardiovascular disease and heart failure: 1, pulmonary infection and multiple chronic diseases: 1  Incubation: 6.7 days, illness onset to visit hospital: 4.5 days  3 (0.9%)  Results: As of February 10, 45 (17.2%) patients have discharged
For COVID‐19 control: first step is prevent transmission at early stage, next steps is early isolation and quarantine of suspected subjects