Coronaviruses are species of virus belonging to the subfamily Coronavirinae in the family Coronaviridae in the order Nidovirales.Coronaviruses are enveloped viruses with a positive-sense single-stranded RNA genome and with a nucleocapsid of helical symmetry. The genomic size of coronaviruses ranges from approximately 26 to 32 kilobases the largest for an RNA virus.
The name "coronavirus" is derived from the Latin corona meaning crown or halo and refers to the characteristic appearance of virions (the infective form of the virus) under electron microscopy (E.M.) with a fringe of large bulbous surface projections creating an image reminiscent of a royal crown or of the solar corona. This morphology is created by the viral spike (S) peplomers which are proteins that populate the surface of the virus and determine host tropism.

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Coronavirus tracker displays the most recent report of the Wuhan Coronavirus ( 2019nCoV ) in an easily understandable and compact way. Featuring a map of infected areas count of total infected spread over time and more Coronavirus Tracker can help you visualize the spread and affect of the Coronavirus.

Coronaviruses are types of viruses that typically affect the respiratory tract of mammals including humans. They are associated with the common cold pneumonia and severe acute respiratory syndrome (SARS) and can also affect the gut. ... SARS spread from China to cause infection in 37 countries killing 774 people