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  Coronavirus

Sigma KEE - Coronavirus
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Coronavirus
Coronaviruses are a group of RNA viruses that cause diseases in mammals and birds and include the viruses that cause SARS, MERS and COVID19. In humans and birds, they cause respiratory tract infections that can range from mild to lethal. Coronaviruses constitute the subfamily Orthocoronavirinae, in the family Coronaviridae, order Nidovirales, and realm Riboviria. They are enveloped viruses with a positive-sense single-stranded RNA genome and a nucleocapsid of helical symmetry.The genome size of coronaviruses ranges from approximately 26 to 32 kilobases, one of the largest among RNA viruses. They have characteristic club-shaped spikes that project from their surface, which in electron micrographs create an image reminiscent of the solar corona, from which their name derives.[from Wikipedia]
Relationships      
Parents 笼罩病毒 The class of viruses whose virions have a lipid bilayer formed when the nucleocapsid buds through the cell membrane upon formation.
  RNA病毒 The class of viruses whose genetic material is made up of RNA.
  病毒单一搁浅 The class of viruses whose DNA or RNA is singlestranded.
Children SARSCoV1The Virus that caused the original SARS that apparently originated in China in 2003.
 SARSCoV2


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