New crown generally means new crown pneumonia. It is possible for a new crown pneumonia infection to be preceded by a sore throat or a fever, and it is possible for some patients with asymptomatic infection to have neither condition. The clinical symptoms may vary depending on the individual’s condition. Therefore, it is recommended that patients with related symptoms seek prompt medical attention and make a comprehensive determination based on results such as nucleic acid testing. The clinical manifestations of neoconiosis infection are characterized by dry cough, malaise and fever, with an incubation period of 1-14 days, mostly 3-7 days. For infected patients early on may manifest as mild malaise, fever, smell and taste disorders, some patients may also have dry cough, sore throat, dyspnea and other respiratory symptoms, for patients with more serious infection may even develop shock and respiratory failure, requiring mechanical ventilation, while the symptoms of fever or sore throat among the symptoms of infection generally do not have a strict sequential distinction. For patients with fever and sore throat, along with other symptoms of infection mentioned above, a comprehensive determination can be made promptly by nucleic acid testing, blood testing, and imaging. If a patient has a fever or sore throat even though all the tests are negative, it is likely to be caused by factors such as upper respiratory tract infections, which can be treated with cold medicine such as cold and fever pellets under the guidance of a doctor to relieve the discomfort of fever and sore throat.