What is COVID-19
COVID-19 is a disease caused by a new strain of coronavirus. 'CO' stands for corona, 'VI' for virus, and 'D' for disease. Formerly, this disease was referred to as '2019 novel coronavirus' or '2019-nCoV.'
The COVID-19 virus is a new virus linked to the same family of viruses as Severe Acute Respiratory Syndrome (SARS) and some types of common cold.
Coronaviruses are enveloped positive-stranded RNA viruses that replicate in the cytoplasm. To deliver their nucleocapsid into the host cell, they rely on the fusion of their envelope with the host cell membrane. Although the first member of the coronavirus family was discovered in the 1930s, coronaviruses gained particular notoriety when the severe acute respiratory syndrome (SARS) outbreak shook the world in 2002-2003. Interest in this family of viruses grew in the aftermath of this epidemic, leading to the identification of many new family members.
SARS-CoV-2 — also known as 2019-nCoV, the virus that causes COVID-19-virus particle. The virus surface is covered with spike proteins that enable the virus to enter and infect human cells. The spikes on the surface of coronaviruses give this virus family its name — corona, which is Latin for "crown," and most any coronavirus will have a crown-like appearance.
who.int - key messages and actions for covid-19 prevention and control,
researchgate.net, Publication: Mechanisms of Coronavirus Cell Entry Mediated by the Viral Spike Protein,
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