The new coronavirus is widespread, with relatively few cases of infection in children in the early days, but from what we can see now, it can infect infants from a few months to 99 years old. Epidemics of infection are occurring worldwide, and the virus is new to humans, with no antibodies or immunity. Therefore, the virus is currently susceptible to all populations, and all people are not immune to it, and it is a population-wide susceptible virus. Although the whole population is susceptible, there are differences in the onset and clinical manifestations, such as severe cases are mainly in the elderly, while the clinical manifestations in children are relatively mild and the prognosis is relatively good. Content source: Dr. You Lai