Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2),12 previously known by the provisional name 2019 novel coronavirus (2019-nCoV),345 is a positive-sense single-stranded RNA virus.67 It is contagious in humans and is the cause of the ongoing 2019–20 coronavirus outbreak, an epidemic of coronavirus disease 2019 (COVID-19) that has been designated a Public Health Emergency of International Concern by the World Health Organization (WHO).89
SARS-CoV-2 has close genetic similarity to bat coronaviruses, from which it likely originated.101112 An intermediate reservoir such as a pangolin is also thought to be involved in its introduction to humans.1314 From a taxonomic perspective SARS-CoV-2 is classified as a strain of the species severe acute respiratory syndrome-related coronavirus (SARSr-CoV).1 To avoid confusion with the disease SARS, the WHO sometimes refers to the virus as "the virus responsible for COVID-19" in public health communications.
SARS-CoV-2.kr
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