Novel coronavirus pneumonia is an infectious disease, and infectious diseases have three important components: 1) the source of infection; 2) the means of transmission; and 3) the susceptible population. The youngest patient infected with novel coronavirus is a baby of a few months old, which means that the novel coronavirus has the potential to infect all humans, from children to the elderly. New coronavirus infection has the following conditions: 1, whether there is a transmission route, whether the child is exposed to the pathogen, such as whether there is contact with the patient; 2, if contact with the patient, depending on the amount of contact, every day together and occasionally stayed a few minutes of the results must not be the same; 3, and their own resistance, if the resistance is good, immunity is strong, it is less susceptible to get the disease. Therefore, children should do a good job of personal protection and avoid contact with suspected patients, so that children can not get new coronavirus pneumonia. Source: Dr. Yau Lai