write everything about corona virus. write in 200 words
Answers
What is a coronavirus?
The coronaviruses family cause illnesses ranging from the common cold to more severe diseases such as severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS), according to the WHO.
They circulate in animals and some can be transmitted between animals and humans. Several coronaviruses are circulating in animals that have not yet infected humans.
The new coronavirus, the seventh known to affect humans, has been named COVID-19.
What are the symptoms?
Common signs of infection include fever, coughing and breathing difficulties. In severe cases, it can cause pneumonia, multiple organ failure and death.
The incubation period of COVID-19 is thought to be between one and 14 days. It is contagious before symptoms appear.
Infected patients can be also asymptomatic, meaning they do not display any symptoms despite having the virus in their systems.
How many people are affected?
In mainland China, at least 2,118 people died and at least 74,576 have been infected, according to official figures.
Deaths have also been confirmed in Hong Kong, the Philippines, Japan, France, Taiwan, Iran and South Korea.
Cases have been confirmed in Australia, Belgium, Cambodia, Canada, Egypt, Finland, France, Germany, Hong Kong, India, Italy, Iran, Japan, Macau, Malaysia, Nepal, the Philippines, Russia, Singapore, Spain, Sri Lanka, Sweden, Taiwan, Thailand, the UAE, the UK, the US and Vietnam.
Where did it come from?
China alerted the WHO to cases of unusual pneumonia in Wuhan on December 31.
COVID-19 is thought to have originated in a seafood market where wildlife was sold illegally.
On February 7, Chinese researchers said the virus could have spread from an infected animal to humans through illegally trafficked pangolins, prized in Asia for food and medicine.
Scientists have pointed to either bats or snakes as the possible source.
Corona Virus
A coronavirus is one of a number of viruses that cause diseases in mammals and birds. In humans, the viruses cause respiratory infections, including the common cold, which are typically mild, though rarer forms such as SARS, MERS and COVID-19 can be lethal. Symptoms vary in other species: in chickens, they cause an upper respiratory disease, while in cows and pigs coronaviruses cause diarrhea. There are no vaccines or antiviral drugs to prevent or treat human coronavirus infections.
Coronaviruses comprise the subfamily Orthocoronavirinae in the family Coronaviridae, in the order Nidovirales. They are enveloped viruses with a positive-sense single-stranded RNA genome and a nucleocapsid of helical symmetry. The genome size of coronaviruses ranges from approximately 26 to 32 kilobases, the largest among known RNA viruses. The name coronavirus is derived from the Latin corona, meaning "crown" or "halo", which refers to the characteristic appearance of the virus particles (virions): they have a fringe reminiscent of a crown or of a solar corona.
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