After infection with new coronavirus pneumonia, it is recognized that the incubation period is 1-14 days, and most patients develop the disease in 3-7 days, 3-7 days can appear fever, there can also be cough, dyspnea and other symptoms, so in most cases it is 3-7 days after viral infection, fever, most of which is moderate to high fever, fever of 38 ℃ or even more than 39 ℃, and a very small number of patients are low fever, or even no fever. Most patients develop fever within 14 days. Therefore, for people traveling to and living in Wuhan or surrounding areas, the quarantine period is set at 14 days because the incubation period for most patients is 14 days. Source: Dr. Yurai