Outbreak of 2019 Novel Coronavirus infection started in Wuhan and quickly spread to the world. Suspected patients were isolated and treated in our department. Clinical data was recorded to investigate the clinical features of patients confirmed and excluded diagnosed of 2019 Novel Coronavirus infection.

Medical date of suspected patients of 2019 Novel Coronavirus infection, who came to outpatient department of the Third Affiliated Hospital of Sun Yat-sen University, were sent to an expert group if they met the inclusion criteria. The expert group discussed and made a decision if the patient would be admission to isolation unit. Pharyngeal swabs of the patients were obtained and sent to local Center for Disease Control and Prevention (CDC) for detection the 2019 Novel Coronavirus after patients were admission to isolation unit. Diagnosis of 2019 Novel Coronavirus infection was confirmed if the result was positive or excluded if two consecutive results were negative. Patients' demographic data and clinical characteristics were recorded. Clinical characteristics including epidemiological history, past history, personal history, symptoms, signs, blood cells count, biochemical test results, chest computed tomography (CT) images and treatment. Comprehensive treatments were given to the patients.

Inclusion Criteria:

1. Epidemiological history including resident of Hubei province, or travel history to Hubei province or exposure to suspected patients in the past two weeks.
2. Symptoms like fever, fatigue, myalgia, headache, cough, sputum production, chest tightness, dyspnea, etc.
3. White blood cells decreased or were normal, or lymphocytes decreased, and chest CT images showed typical findings of viral pneumonia.

Exclusion Criteria:

1. Patients can not follow-up;
2. Investigator considering inappropriate.

Suspected patients of 2019 Novel Coronavirus infection