Details .. Chinese study: Corona split into two strains and who was cured may be infected again

[size=41]Details .. Chinese study: Corona split into two strains and who was cured may be infected again

2020-03-04
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The British Daily Mail said that a team of researchers in Beijing and Shanghai studied 103 samples of the Corona virus and found two strains of it, L and S, and found that L was the most common and most aggressive, but it has become less common since early January.
The highly aggressive virus may burn itself by dropping patients in hospital, more than 94,000 people have now been infected with the coronavirus and 3,200 have died while 50,000 have recovered.
Now, researchers say, there are two types of the same Corona virus that infect people - and most people seem to have been infected with its most aggressive form.
They claimed that about 70% of patients were infected with the L-strain, which is more aggressive and more widespread than S.
But L became less common as the disease continued to spread, as it seemed to be struggling to spread since early January, while S became more common.
S is less aggressive, but it is believed to be the first strain of virus that has caused transmission to humans and continues to infect new patients.
A team of experts from Beijing and Shanghai said that 70% of people with the most aggressive strain of the virus may mutate, difficult to track or treat, and increase the risk of infection for those who have been cured again.
Experts have warned that the study that discovered the mutation uses only a tiny amount of data - 103 samples - so more research is needed, and another scientist added that it is normal for viruses to change as they travel from animals to humans.
Scientists say that the virus has divided into two significantly different strains, most people have discovered the most aggressive version, but it is now beginning to fade while the moderate strain continues to infect humans, as "human intervention measures" have forced the most aggressive types of coronavirus to submit.
In the research, the researchers, led by Professor Jian Lu and Dr. Ji Tsui, said: “While type L was more prevalent in the early stages of an outbreak in Wuhan, the frequency of type L decreased after early January 2020.
On the other hand, the S type, which is older evolutionarily and less aggressive, may have increased relative frequency due to the relatively weak selective pressure.
 
Where does the virus come from?
According to scientists, the virus certainly came from bats, as corona viruses generally originate in animals - SARS and similar corona viruses are thought to have originated in cats and camels, respectively.
The first cases of COVID-19 came from people visiting or working at a live animal market at Wuhan Chinese Seafood Market, which has since been closed for investigation.
Sure enough, dead and animal animals were sold on the market, including cubs wolves, salamanders, snakes, peacocks, nisans and camel meat.
A study by the Wuhan Institute of Virology, published in February 2020 in the scientific journal Nature, revealed that genotype virus samples present in patients in China were 96% identical to the Corona virus they found in bats.
However, there were not a lot of bats on the market, so scientists say it is possible that there was an animal that acted as a host, rescued it from the bats before transporting it to humans and the type of animal that it was was not confirmed.
Dr. Michael Skinner, a virologist at the Imperial College University in London, was not involved in the research, but said: 'The discovery definitely puts the origin of the virus in bats in China, we still don't know if other types were acting as intermediate hosts to amplify the virus, And maybe even to bring it to the market, not what types its host might be. ”
Experts say the international community is concerned about the virus because little is known about it and it seems to be spreading quickly.
The current virus is similar to SARS, which infected 8,000 people and killed nearly 800 when it erupted in Asia in 2003, because it is a type of coronavirus that infects humans. However, it is less lethal than SARS that has killed one in 10 people, compared to about 1 in 50 for COVID-19. Sk.

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[ltr]Two Strains of Coronavirus Identified by Chinese Scientists | http://Newsmax.com  https://www.newsmax.com/newsfront/coronavirus-strains-research-china/2020/03/04/id/956885/ …[/ltr]

Two Strains of Coronavirus Identified by Chinese Scientists

Scientific researchers from China have discovered that two different types of coronavirus likely are behind the worldwide outbreak.
newsmax.com




12:35 PM - Mar 4, 2020
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Another reason for concern, the study says, is that no one has any immunity to the virus because it has never been seen before, meaning that it may be able to cause greater harm than many viruses we encounter, such as influenza or colds.
Speaking at a press conference in January, Dr. Peter Hurby, a professor at Oxford University, said: "New viruses can spread more quickly in the population than viruses that spread all the time because we have no immunity to them."
Most seasonal influenza viruses have a death rate of less than one in 1,000 people. Here we are talking about a virus in which we do not fully understand the severity spectrum, but the death rate is likely to reach 2%.
If the mortality rate is 2% real, this means two in 100 patients die.
Dr. Hurby added: “The 2% death rate from infection is similar to the Spanish flu pandemic in 1918, so it is a major concern globally.”
How does the virus spread?
The disease can spread to people only through coughing and sneezing, which makes it a highly contagious infection, and it may also spread before someone develops symptoms.
It is believed that he travels in saliva and even through water in the eyes, so touching, kissing and sharing cutlery and utensils are all risky.
Originally, people were believed to hunt them from the live animal market in Wuhan, China, but cases soon began to appear in people who had never existed, forcing the nurses and the doctor to realize that it was spreading from person to person.
There is now evidence that it can spread from a third party - to a person from a person who has signed it from another person.
 
What does the virus do for you? What are the symptoms?
Once someone is infected with the COVID-19 virus, it may take between 2 and 14 days, or even longer, for him to have any symptoms - but he may remain contagious during this time.
In case of illness, typical signs include runny nose, cough, sore throat, and fever (high fever). The vast majority of these patients will recover without any problems, and many of them will not need medical help at all.
In a small group of patients, who appear to be elderly or have long-term illnesses, this can lead to pneumonia.
Pneumonia is an infection in which the lungs swell and filled with fluid, which makes breathing increasingly difficult, and if left untreated, it may be fatal and suffocate people.
The numbers show that young children do not seem to have been significantly affected by the virus, as they say it is strange given their susceptibility to influenza, but it is not clear why.
What are the genetic tests that revealed the virus?
Scientists in China have recorded the genetic sequence of about 19 strains of the virus and have given it to experts working all over the world.
This means that efforts to study and control the virus can be very difficult because the virus may look different each time scientists analyze it.
Further study may be able to reveal whether the virus first infected a small number of people and then changed and spread them, or whether there are different versions of the virus coming from animals that have evolved separately.
 
Can the virus be treated?
 
COVID-19 cannot be cured and hard to contain.
Antibiotics do not work against viruses, so they are not included. Antivirals can work, but the process of understanding the virus and then developing and producing drugs to treat it can take years and vast amounts of money.
There is no vaccine against coronavirus yet, and it is unlikely that it will be developed in time to have any benefit in this outbreak, for reasons similar to the above.
The National Institutes of Health in the United States and Baylor University in Waco, Texas, say they are working on a vaccine based on what they know about corona viruses in general, using information from the SARS outbreak. But this may take a year or more to develop, according to the pharmaceutical technology.
Governments and health authorities are currently working to contain the virus and care for patients and patients who contract it.
People who develop the disease are quarantined in hospitals, where their symptoms can be treated and they will be away from the uninfected audience.
Airports around the world take screening procedures like doctors are on site, taking people's temperatures to check for a fever and using a thermal scan to detect people who might be sick (the infection causes a fever).
However, it may take several weeks for symptoms to appear, so there is little possibility that patients will be detected at the airport.
 

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[ltr]TWO strains of the killer coronavirus are spreading, study claims https://mol.im/a/8073543  via @MailOnline[/ltr]

TWO strains of the killer coronavirus are spreading, study claims

Researchers in Beijing and Shanghai found the more aggressive strain appeared to have evolved from the other but has become less common since early January, with the older version returning.
dailymail.co.uk




12:57 PM - Mar 4, 2020
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Is this an epidemic?
An outbreak is an epidemic, which is when a disease controls one community, such as a country or region.
Although it has spread to dozens of countries, the outbreak has not yet been classified as a pandemic, which the World Health Organization has defined as the "global spread of a new disease".
“At the moment we are not in a state of pandemic,” said Dr. Sylvie Briand, WHO chief for global preparedness for communicable risks. We are at a stage where there is an epidemic with multiple foci, and we are trying to eliminate transmission of infection in each of these foci, 'the Guardian stated.
She said most of the cases were "indirect" from the epicenter, so the disease did not actually spread around the world.

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