Although the market is officially a seafood market, other dead and living animals were being sold there, including wolf cubs, salamanders, snakes, peacocks, porcupines and camel meat. A study by the Wuhan Institute of Virology, published in February in the scientific journal Nature, found that the genetic make-up virus samples found in patients in China is 96 per cent identical to a coronavirus they found in bats.
However, there were not many bats at the market so scientists say it was likely there was an animal which acted as a middle-man, contracting it from a bat before then transmitting it to a human. It has not yet been confirmed what type of animal this was.
Dr Michael Skinner, a virologist at Imperial College London, was not involved with the research but said: 'The discovery definitely places the origin of nCoV in bats in China. So far the fatalities are quite low.
Why are health experts so worried about it? Experts say the international community is concerned about the virus because so little is known about it and it appears to be spreading quickly. It is similar to SARS, which infected 8, people and killed nearly in an outbreak in Asia in , in that it is a type of coronavirus which infects humans' lungs. Another reason for concern is that nobody has any immunity to the virus because they've never encountered it before.
This means it may be able to cause more damage than viruses we come across often, like the flu or common cold. Speaking at a briefing in January, Oxford University professor, Dr Peter Horby, said: 'Novel viruses can spread much faster through the population than viruses which circulate all the time because we have no immunity to them.
Here we're talking about a virus where we don't understand fully the severity spectrum but it's possible the case fatality rate could be as high as two per cent.
If the death rate is truly two per cent, that means two out of every patients who get it will die. But that's the current circumstance we're in. How does the virus spread? The illness can spread between people just through coughs and sneezes, making it an extremely contagious infection.
And it may also spread even before someone has symptoms. It is believed to travel in the saliva and even through water in the eyes, therefore close contact, kissing, and sharing cutlery or utensils are all risky. It can also live on surfaces, such as plastic and steel, for up to 72 hours, meaning people can catch it by touching contaminated surfaces.
Originally, people were thought to be catching it from a live animal market in Wuhan city. But cases soon began to emerge in people who had never been there, which forced medics to realise it was spreading from person to person. What does the virus do to you? What are the symptoms? Once someone has caught the COVID virus it may take between two and 14 days, or even longer, for them to show any symptoms — but they may still be contagious during this time. If and when they do become ill, typical signs include a runny nose, a cough, sore throat and a fever high temperature.
The vast majority of patients will recover from these without any issues, and many will need no medical help at all. In a small group of patients, who seem mainly to be the elderly or those with long-term illnesses, it can lead to pneumonia. Pneumonia is an infection in which the insides of the lungs swell up and fill with fluid.
It makes it increasingly difficult to breathe and, if left untreated, can be fatal and suffocate people. Figures are showing that young children do not seem to be particularly badly affected by the virus, which they say is peculiar considering their susceptibility to flu, but it is not clear why. What have genetic tests revealed about the virus? Scientists in China have recorded the genetic sequences of around 19 strains of the virus and released them to experts working around the world.
This allows others to study them, develop tests and potentially look into treating the illness they cause. Examinations have revealed the coronavirus did not change much — changing is known as mutating — much during the early stages of its spread.
However, the director-general of China's Center for Disease Control and Prevention, Gao Fu, said the virus was mutating and adapting as it spread through people. This means efforts to study the virus and to potentially control it may be made extra difficult because the virus might look different every time scientists analyse it. From turning junk rooms back into bedroom, to bringing out-dated furnishings up to speed, she's full of tips that work well for all home buyers.
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