Firstly, the patient had a history of travel to the infected area within the last 2 weeks, especially a history of direct or indirect contact with farmers’ markets. The patient also had fever, dry cough and dyspnea, scattered patchy shadows or diffuse ground glass shadows in both lungs on imaging, normal or reduced total white blood cell count and reduced lymphocyte count early in the course of the disease, and no significant improvement or progressive worsening of the disease after 3 days of standardized antibacterial medication. The final diagnosis requires the collection of sputum, pharyngeal swabs and other respiratory specimens for viral nucleic acid testing or genetic testing to find novel coronavirus nucleic acids.