Coronavirus Outbreak: All the Secrets Revealed About the Covid-19 Pandemic. A complete Rational Guide of its Evolution, Expansion, Symptoms and First Defense

What is the Human Corona virus, and How Dangerous Is It?
Corona viruses are a large virus family usually targeting the respiratory
organ. The name is being derived from the Latin word corona, meaning

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crown, due to the spiky fringe which surrounds these viruses. Many species,
such as bats, cats and birds, get sick. Just seven are known to infect humans
like Covid-19, SARS, and MERS.
SARS is believed to have developed in China from bats to civet cats to
humans; MERS has spread from bats to camels into Middle East humans. No
one knows where the Covid-19 came from. For now, livestock in Wuhan,
China, a town of 11 million, are thought to have taken the jump late last year.
But scholars still seek to understand their exact roots.
As for the signs, in 10 and more than 30 percent of cases, two of the seven
corona viruses that infect humans, SARS and MERS, can cause severe
pneumonia, and even death. The others, though, show milder effects, like a
common cold. Apparently, it's evident that Covid-19 will kill — but it's not
clear how often or how it relates the fatality rate to SARS and MERS.
Most patients now start with fever, cough, and shortness of breath, according
to the Centers for Disease Control and Prevention. An early analysis,
published in The Lancet, offered even greater detail. It has looked at a subset
of the first 41 patients in Wuhan with confirmed Covid-19. Fever, cough,
muscle pain, and exhaustion were the most common symptoms; vomiting,
nausea, and coughing up mucus, or blood, were less common. They all had
CT scans of pneumonia and lung abnormalities. As for the severity of the
disease: 13 people were taken to an ICU, where six died. By January 22, most
patients had been discharged from the hospital (68 per cent).
More recently, records have also been made of people with very mild
symptoms, such as the cases in southern Germany. There is even evidence
that events are asymptomatic. It's likely that Covid-19 can look more like flu
than it does like SARS. That's because when they are first detected, infectious
diseases usually seem more serious, because people appearing in hospitals
tend to be the sickest. However, the new virus seems less dangerous than
both SARS and MERS.