After infection with the new type of pneumonia, because its incubation period is usually in 1-14 days, most of the cases are 3-7 days, in the incubation period may not have any symptoms, and will not have fever, the incubation period reaches 3-5 days, there may be fever, this fever will be more serious, 39 ℃ – 41 ℃ high fever may reach more than 72 hours, and is different from the common cold. The use of antipyretic drugs for the new coronavirus is not effective, and may be followed by a prolonged fever after a short period of time. Therefore, after infection with the new coronavirus pneumonia, fever may appear in 3-5 days, of course, there are some patients with severe or critical illnesses who may not have fever, and there are also some young patients who do not have fever, so there is no exact time when the fever will appear. Source: Dr. Yurai