write a essay about corona virus
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Answer:
Corona Virus :
Corona viruses are the group of virus which is a group of viruses that have a crown like appearances when viewed in under the electronic microscope. They belong to the Coronaviridiae family. Corona virus causes the Severe Acute Respiratory Syndrome (SARS) [4]. They are commonly known to cause the respiratory disease in human being. Some time they also caused the gastrointestinal disease in different farm animals. They contain +ve single standard enveloped RNA as their genetic material. The genome of corona virus is the largest among the viruses (27-32 in length). Large, roughly spherical, enveloped particles with a nuleocapsids and large, petal like spike 20nm long, protruding from the membrane appearing as the crown [1]. These viruses are host or tissue specific based on the receptor specificity of their spike or S protein. It is an enveloped viruses and the envelope is made up of glycoprotein.
Answer:
The World Health Organization (WHO) has declared the new coronavirus outbreak, which originated in Wuhan, China, a pandemic. As of July 30, the global death toll surpassed 667,000 amid at least 17 million cases. Nearly 10 million people have recovered from the disease worldwide, according to the data collected by the Johns Hopkins University in the United States.The coronavirus family causes 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.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, which is why so many people get infected.
Infected patients can be also asymptomatic, meaning they do not display any symptoms despite having the virus in their systems.
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 possible sources.