The causative agent of SARS in 2003 was the SARS coronavirus.
The SARS virus is a completely new coronavirus compared to other known coronaviruses in humans and animals, and is not the result of recent genetic recombination between known coronaviruses.The SARS virus is relatively stable, and the virus can survive for at least 10 days at room temperature.
SARS, also known as Severe Acute Respiratory Syndrome, is a highly contagious infectious disease caused by the SARS coronavirus, with a high case fatality rate and multiple organ system involvement. It is mainly spread through close respiratory droplets and close contact. Clinical manifestations include high fever, shortness of breath, dyspnea, etc. Interstitial changes in the lungs of varying degrees may be seen on chest radiographs or CT of the lungs.