The understanding of novel coronavirus pneumonia is in the process of deepening, and it is basically clear that novel coronavirus pneumonia is susceptible to all populations, including children, and news reports about the possibility of infection in infants of a few months old, infants, children, adolescents, adults, and the elderly. There is no definite which age group is more susceptible or which age group is less susceptible. Although there is no difference in susceptibility, there are differences in the severity of the disease in different populations. Children and most patients have relatively mild infections, but older patients, especially those with co-morbidities, have more severe infections with novel coronavirus pneumonia. Content source: Dr. You Lai