Может быть это информация поможет понять (https://loinc.org/sars-coronavirus-2/):а.  SARS-related coronavirus (SARS-related CoV) is a species of coronavirus in the sub-genus Sarbecovirus. SARS-related CoV includes SARS coronavirus (SARS-CoV), SARS coronavirus 2 (SARS-CoV-2), and bat SARS coronaviruses.b.  SARS-CoV is the specific virus responsible for Severe Acute Respiratory Syndrome, which was identified in 2003.c.  SARS-CoV-2 is the virus responsible for COVID-19. It was previously known as 2019 Novel coronavirus (2019-nCov).d.  Our current understanding of “SARS-like coronavirus” (SARS-like CoV) is that it is a group of viruses that are genetically similar to SARS-CoV, but that the group does not include SARS-CoV or SARS-CoV-2. In other words, SARS-related CoV = SARS-CoV + SARS-CoV-2 + SARS-like CoV.