realizes caused by infection with coronavirus infectious disease process SARS-CoV disease process https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndrome SARS was a relatively rare disease; at the end of the epidemic in June 2003, the incidence was 8422 cases with a case-fatality rate of 11%. The case-fatality ratio ranges from 0% to 50% depending on the age group of the patient. Patients under 24 were least likely to die; those 65 and older were most likely to die. Reference: https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndrome https://www.who.int/ith/diseases/sars/en/ Severe Acute Respiratory Syndrome SARS coronavirus disease process Oliver He, Yu Hong severe acute respiratory syndrome Severe acute respiratory syndrome-related coronavirus