Novel coronavirus pneumonia is more contagious and has a poorer prognosis for patients who are old or have poor organ function, are older, and have other organ function impairments. Compared to SARS, the mortality rate is not as high as SARS, but it is indeed more contagious. Novel coronavirus pneumonia and SARS are both respiratory infections caused by coronaviruses, and are two different types of coronaviruses. Novel coronavirus is a newly discovered new coronavirus that people did not recognize in the past, and the clinical course is similar to SARS. If both are transmitted through the respiratory tract, both may present with cough, fever, and even chest tightness, shortness of breath, and difficulty breathing. Content source: Dr. You Lai