Once infected with the new coronavirus, the patient is actually in the state of possible onset at any time, in fact, the onset of the patient’s onset of the incubation period varies from person to person, a short period of time may be 1-2 days onset of the disease, a long period of time can be up to two weeks after the onset of the disease, so the onset of the incubation period of the individual difference is relatively large. The determining factor is the viral load at the time of infection. If the infected individual has a high viral load, the onset of the disease may be earlier. If the infected individual has a strong immune system, the onset of the disease may be later. If the immune system is weak, as in the case of the elderly who are sickly, the onset of the disease may be earlier and the symptoms may be more aggressive, which is an important factor in determining the degree of severity. Therefore, being infected with the novel coronavirus, once the onset of the disease may be manifested as mild, common, severe or critical, some patients may show more severe symptoms from the beginning of the infection, so no matter what day the onset of the disease is, every day is a dangerous day for the patient. Content source: Dr. Yurai