Changes

<center>''An updated world map of known coronavirus infections is [https://gisanddata.maps.arcgis.com/apps/opsdashboard/index.html#/bda7594740fd40299423467b48e9ecf6 here]''</center>

<center>''An updated world map of known coronavirus infections is [https://gisanddata.maps.arcgis.com/apps/opsdashboard/index.html#/bda7594740fd40299423467b48e9ecf6 here]''</center>

[[File:Coronavirus1.jpg|right|300px|thumb|Electron microscope scan of a coronavirus, so-called due to the crown-like filaments on the surface.]]

[[ File:Mao corona.jpg|right|300px|thumb|Chinese communists suppressed news of the outbreak for two months, arrested doctors who posted on social media about it, and did advise the people of Wuhan until after the virus spread throughout the world.]]

'''Coronavirus''' is a family of several viruses. '''Covud-19''' or the '''Wuhan coronavirus''' as [[CNN]] refers to it,<ref>https://www.youtube.com/watch?v=5eZtCq1aj2g</ref> is a particular potentially deadly strain that first was reported to appear in the city of Wuahn, China in late November and early December, 2019.  The Chinese central government made no public warnings about a potential widespread pandemic until January 23, 2020, made no advance preparations to deal with a major health crisis, and arrested doctors who posted on [[social media]] warning of a large scale outbreak.

'''Coronavirus''' is a family of several viruses. '''Covud-19''' or the '''Wuhan coronavirus''' as [[CNN]] refers to it,<ref>https://www.youtube.com/watch?v=5eZtCq1aj2g</ref> is a particular potentially deadly strain that first was reported to appear in the city of Wuahn, China in late November and early December, 2019.  The Chinese central government made no public warnings about a potential widespread pandemic until January 23, 2020, made no advance preparations to deal with a major health crisis, and arrested doctors who posted on [[social media]] warning of a large scale outbreak.

==General term==

==General term==

A '''coronavirus''' is any of several viruses affecting either animals or humans, and named for the crown-like spikes on the surface of the viral cell.  Coronaviruses affect the upper-respiratory tract, causing infections ranging from mild to severe, such as bronchitis and pneumonia.  Coronaviruses affect the upper-respiratory tract, causing infections ranging from mild to severe, such as bronchitis and pneumonia.  Several strains, such as SARS, MERS, and COVID-19, the late-2019 outbreak in Wuhan, China, have been confirmed to be fatal.

A '''coronavirus''' is any of several viruses affecting either animals or humans, and named for the crown-like spikes on the surface of the viral cell.  Coronaviruses affect the upper-respiratory tract, causing infections ranging from mild to severe, such as bronchitis and pneumonia.  Coronaviruses affect the upper-respiratory tract, causing infections ranging from mild to severe, such as bronchitis and pneumonia.  Several strains, such as SARS, MERS, and COVID-19, the late-2019 outbreak in Wuhan, China, have been confirmed to be fatal.

==Description==

==Description==

Coronaviruses are positive RNA viruses with a diameter of approximately 80-160 nm. The name itself derives from the visual image of individual virus cells as seen by an electron microscope; these cells have a spiky appearance similar to the corona of the sun. This aspect is represented by the glycoprotein that crosses the viral envelope, reaching the protein "coat", called protein S, with hemagglutination and melting properties. The virus structure is more or less typical of coated viruses, therefore it has a helicoidal symmetry nucleocapsid and a pericapsid consisting of a double phospholipid layer of cellular origin; between these two layers there is a protein coat consisting of the M protein (matrix or matrix). In the nucleocapsid is found the genome consisting of an ssRNA + (a single RNA strand with positive polarity) of 27-30 kilo bases which codes for 7 viral proteins and is associated with the protein N.

Coronaviruses are positive RNA viruses with a diameter of approximately 80-160 nm. The name itself derives from the visual image of individual virus cells as seen by an electron microscope; these cells have a spiky appearance similar to the corona of the sun. This aspect is represented by the glycoprotein that crosses the viral envelope, reaching the protein "coat", called protein S, with hemagglutination and melting properties. The virus structure is more or less typical of coated viruses, therefore it has a helicoidal symmetry nucleocapsid and a pericapsid consisting of a double phospholipid layer of cellular origin; between these two layers there is a protein coat consisting of the M protein (matrix or matrix). In the nucleocapsid is found the genome consisting of an ssRNA + (a single RNA strand with positive polarity) of 27-30 kilo bases which codes for 7 viral proteins and is associated with the protein N.