The typical manifestations of novel coronavirus pneumonia include fever, malaise, and dry cough, but there are many atypical symptoms, such as low fever and cough that are not severe. If there is such a past history, the disease should be highly suspected. At this point, you cannot judge from the symptoms alone, you can go to the hospital for relevant tests, such as the simplest blood tests to check the white blood cells and lymphocytes, and you can also take a chest X-ray to check the condition of the lungs. If the first test is negative, but if the patient is highly suspicious, at least 2 tests should be performed, and the interval is greater than 1 day. If the interval between the 2 tests is greater than 1 day and both are negative, the patient can be ruled out for novel coronavirus pneumonia. Therefore, the diagnosis of novel coronavirus pneumonia can be made by several conditions: 1) whether there is a history of contact with infectious diseases; 2) whether there are typical or atypical symptoms; 3) whether there is laboratory support; 4) whether there is support from chest radiographs; 5) the most important method to clarify the diagnosis is still nucleic acid testing, and a positive nucleic acid test should also be diagnosed as novel coronavirus pneumonia. Content source: Dr. You Lai