The epidemic mentioned here may refer to the current epidemic of new coronavirus pneumonia. The symptoms of new coronavirus pneumonia include fever, sore throat, nasal congestion, runny nose and diarrhea. New coronavirus pneumonia is caused by infection with a new coronavirus, which is a viral infection and therefore has the common symptoms of viral infection, including respiratory symptoms, gastrointestinal symptoms and systemic symptoms. At present, novel coronavirus infection in China has fever as the primary manifestation, and most patients have respiratory symptoms such as sore throat, nasal congestion, runny nose, cough and sputum, similar to acute upper respiratory tract infection, while some patients may have gastrointestinal symptoms such as abdominal pain, diarrhea and vomiting. A positive nucleic acid test for novel coronavirus can confirm the diagnosis of novel coronavirus infection, so patients suspected of novel coronavirus infection should undergo nucleic acid testing.