What is Coronavirus according to Science Encyclopedia entry writing. Coronaviruses are systematically classified as Coronaviridae (Coronaviridae). Coronavirus is a positive-stranded single-stranded RNA virus with an envelope of about 80 to 120 nm in diameter. Its genetic material is the largest of all RNA viruses and only infects humans, mice, pigs, cats, dogs, and birds. class of vertebrates. A variant of coronavirus is the pathogen that causes atypical pneumonia and belongs to the RNA virus. Coronavirus was first isolated from chickens in 1937.
The diameter of the virus particles is 60-200nm, with an average diameter of 100nm. It is spherical or oval and has polymorphism. The virus has an envelope, and there are spinous processes on the envelope. The entire virus looks like a corona, and the spinous processes of different coronaviruses are significantly different. Tubular inclusions are sometimes seen in coronavirus-infected cells.
On January 20, 2020, Academician Gao Fu, a member of the high-level expert group of the National Health Commission, said that the new coronavirus in 2019 is the seventh known coronavirus.
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