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Answers
COVID-19 is the infectious disease caused by the coronavirus, SARS-CoV-2, which is a respiratory pathogen. WHO first learned of this new virus from cases in Wuhan, People’s Republic of China on 31 December 2019.
The most common symptoms of COVID-19 are
Fever
Dry cough
Fatigue
Other symptoms that are less common and may affect some patients include:
Loss of taste or smell,
Nasal congestion,
Conjunctivitis (also known as red eyes)
Sore throat,
Headache,
Muscle or joint pain,
Different types of skin rash,
Nausea or vomiting,
Diarrhea,
Chills or dizziness
People aged 60 and over, and those with underlying medical problems like high blood pressure, heart and lung problems, diabetes, obesity or cancer, are at higher risk of developing serious illness.
However, anyone can get sick with COVID-19 and become seriously ill or die at any age.
The term "corona" is derived from Latin corona, meaning "crown" or "wreath", itself a borrowing from Greek κορώνη korṓnē, "garland, wreath". The word "coronavirus" was first used in print in 1968 by an informal group of virologists in the journal Nature to designate the new family of viruses.
It was immediately adopted by the International Committee for the Nomenclature of Viruses (later renamed International Committee on Taxonomy of Viruses). It refers to the characteristic appearance of virions (the infective form of the virus) by electron microscopy, which have a fringe of large, bulbous surface project