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Answer:Corona Virus or COVID-19 is a virus disease pandemic which started in Dec 2019 and also is in 2020.
Explanation:The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing pandemic of coronavirus disease 2019 (COVID‑19), caused by severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2).[1] The outbreak was first identified in Wuhan, China, in December 2019.[4][6] The World Health Organization declared the outbreak a Public Health Emergency of International Concern on 30 January, and a pandemic on 11 March.[7][8] As of 13 June 2020, more than 7.69 million cases of COVID-19 have been reported in more than 188 countries and territories, resulting in more than 426,000 deaths; more than 3.65 million people have recovered.[5]
COVID-19 pandemic
COVID-19 Outbreak World Map per Capita.svg
Confirmed cases per 100,000 population as of 13 June 2020:
>1,000
300–1,000
100–300
30–100
10–30
0–10
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Total confirmed cases
COVID-19 Outbreak World Map.svg
Map of total confirmed cases as of 13 June 2020
1,000,000+
100,000–999,999
10,000–99,999
1,000–9,999
100–999
1–99
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Confirmed deaths (per 1,000,000 population)
COVID-19 Outbreak World Map Total Deaths per Capita.svg
Map of confirmed deaths per capita as of 13 June 2020
100+
10–100
1–10
0.1–1
>0–0.1
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Confirmed cases (per capita interactive timeline)
Cumulative per capita confirmed COVID-19 cases►
Timeline map of confirmed cases per capita
(drag circle to adjust; may not work on mobile)
See larger version
10,000+
1,000–10,000
100–1,000
>0–100
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A nurse caring for a patient with COVID-19 in an intensive care unit
Meeting of the Italian government task force to face the coronavirus outbreak, 23 February 2020
Taiwanese 33rd Chemical Corps spraying disinfectant on a street in Taipei
Passengers at Linate Airport in Milan have their temperatures taken
Almost empty supermarket aisle in Melbourne, Australia
Top to bottom:
A nurse caring for a COVID-19 patient in an intensive care unit aboard a U.S. hospital ship The Italian government's outbreak task force Disinfection vehicles in Taipei Health checks at Linate Airport in Milan Low stock in an Australian supermarket due to panic buying
Disease
Coronavirus disease 2019 (COVID-19)
Virus strain
Severe acute respiratory syndrome
coronavirus 2 (SARS‑CoV‑2)[a]
Source
Probably bats, possibly via pangolins[2][3]
Location
Worldwide
First outbreak
China[4]
Index case
Wuhan, Hubei, China
30°37′11″N 114°15′28″E
Date
1 December 2019[4] – present
(6 months, 1 week and 5 days)
Confirmed cases
7,693,354[5][b]
Active cases
3,616,614[5]
Recovered
3,650,044[5]
Deaths
426,696[5]
Territories
188[5]
Answer:
Here it is
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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 RNA viruses that cause diseases in mammals and birds. In humans and birds, they cause respiratory tract infections that can range from mild to lethal. Mild illnesses in humans 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. In cows and pigs they cause diarrhea, while in mice they cause hepatitis and encephalomyelitis. 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 coronavirus
Illustration of a SARS-CoV-2 virion
Illustration of a SARS-CoV-2 virion[2]
Red: spike proteins (S)
Grey: lipid bilayer envelope
Yellow: envelope proteins (E)
Orange: membrane proteins (M)
Virus classificatione
(unranked):
Virus
Realm:
Riboviria
Kingdom:
Orthornavirae
Phylum:
Pisuviricota
Class:
Pisoniviricetes
Order:
Nidovirales
Family:
Coronaviridae
Subfamily:
Orthocoronavirinae
Genera[1]
Alphacoronavirus
Betacoronavirus
Gammacoronavirus
Deltacoronavirus
Synonyms[3][4]
Coronavirinae
Coronaviruses constitute the subfamily Orthocoronavirinae, in the family Coronaviridae, order Nidovirales, and realm Riboviria.[5][4] They are enveloped viruses with a positive-sense single-stranded RNA genome and a nucleocapsid of helical symmetry.[6] The genome size of coronaviruses ranges from approximately 26 to 32 kilobases, one of the largest among RNA viruses.[7] 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.[8]
Etymology
History
Microbiology
Classification
Origin
Infection in humans
Infection in animals
Prevention and treatment