New coronaviruses and SARS both fall within the coronavirus range. There are seven known groups of coronaviruses, four of which do not generally cause human illness. 2003 SARS had a significant impact, and the Middle East coronavirus had a greater impact, i.e., patients were more heavily infected. New coronaviruses have their own characteristics compared to SARS. New coronaviruses are more infectious, and men, women and children are generally susceptible to infection, but are less virulent than SARS, which has a higher lethality rate. New coronavirus has a wide range of infection, and according to statistics, 1.2% of the carriers have no symptoms, which means that it is not too fatal to humans. If the carrier virus does not manifest, it is easy to spread to other healthy people as a source of infection, resulting in the spread of the virus and a higher degree of infection. The new coronavirus is insidious and the population is widely susceptible, so it may be dangerous for people with underlying diseases or pregnant women and children, and should be given sufficient attention. In contrast, SARS infection manifests itself more severely, with high fever and respiratory distress after infection, and higher mortality rate, which can attract attention once it develops, and is easily recognized and less infected and affected by timely treatment for healthy people. Content source: Dr. You Lai