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Coronavirus
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This article is about the group of viruses. For the disease involved in the ongoing COVID-19 pandemic, see Coronavirus disease 2019. For the virus that causes this disease, see Severe acute respiratory syndrome coronavirus 2.
Coronaviruses are a group of related RNA viruses that cause diseases in mammals and birds. In humans, these viruses cause respiratory tract infections that can range from mild to lethal. Mild illnesses include some cases of the common cold (which is also caused by other viruses, predominantly rhinoviruses), while more lethal varieties can cause SARS, MERS, and COVID-19. Symptoms in other species vary: in chickens, they cause an upper respiratory tract disease, while in cows and pigs they cause diarrhea. There are as yet no vaccines or antiviral drugs to prevent or treat human coronavirus infections.
Orthocoronavirinae
Coronaviruses 004 lores.jpg
Transmission electron micrograph of avian infectious bronchitis virus
SARS-CoV-2 without background.png
Illustration of the morphology of coronaviruses; the club-shaped viral spike peplomers (red) create the look of a corona surrounding the virion when seen with an electron microscope.
Virus classification e
(unranked):
Virus
Realm:
Riboviria
Kingdom:
Orthornavirae
Phylum:
Pisuviricota
Class:
Pisoniviricetes
Order:
Nidovirales
Family:
Coronaviridae
Subfamily:
Orthocoronavirinae
Genera[1]
Alphacoronavirus
Betacoronavirus
Gammacoronavirus
Deltacoronavirus
Synonyms[2][3][4]
Coronavirinae
Coronaviruses constitute the subfamily Orthocoronavirinae, in the family Coronaviridae, order Nidovirales, and realm Riboviria.[5][6] They are enveloped viruses with a positive-sense single-stranded RNA genome and a nucleocapsid of helical symmetry.[7] The genome size of coronaviruses ranges from approximately 26 to 32 kilobases, one of the largest among RNA viruses.[8] 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.[9]
Etymology
History
Microbiology
Classification
Origin
Infection in humans
Infection in animals
Prevention and treatment
See also
References
Further reading
Last edited 8 days ago by Guest2625
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Coronavirus
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Coronaviruses are a family of viruses that can cause illnesses such as the common cold, severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS). In 2019, a new coronavirus was identified as the cause of a disease outbreak that originated in China.
The virus is now known as the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The disease it causes is called coronavirus disease 2019 (COVID-19). In March 2020, the World Health Organization (WHO) declared the COVID-19 outbreak a pandemic.
Public health groups, including the U.S. Centers for Disease Control and Prevention (CDC) and WHO, are monitoring the pandemic and posting updates on their websites. These groups have also issued recommendations for preventing and treating the illness.
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