A new strain of the corona virus was announced by the British government in mid-December 2020, followed by a new strain in South Africa.
In less than a month, a third new strain of the corona virus has been discovered in Japan.
According to the Japanese Ministry of Health, this new strain of corona virus was discovered in people who came from Brazil, but it is different from strains found in the United Kingdom and South Africa.
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| Discovery of third starin of covid and how dangerous it is |
According to a statement from the Ministry of Health, a new strain of corona was discovered in Japan at airport tests on a man over 40 years of age, a woman over 30 years of age and two young men (a boy and a girl).
Japan is now working with other countries, the World Health Organization and medical experts to analyze the new strain of the virus, and it is unclear whether the available vaccines will be effective against it.
The man, who was diagnosed with the new virus, showed no symptoms when he arrived in Japan but was later hospitalized with difficulty breathing.
The victim complained of a headache, while a young boy had a fever and the young girl showed no symptoms.
Japan has already diagnosed 30 new cases discovered in the UK and South Africa, which experts say could spread more rapidly.
The new strain discovered in Japan is called B1.1.248 and contains at least 12 mutations.
One of these mutations is also found in species discovered in the United Kingdom and South Africa, raising fears that the species discovered in Japan may be more contagious.
However, Takaji Wakita, head of Japan's National Institute of Infectious Diseases, said there was no evidence at the time that the new strain was more contagious.
Detailed research is being conducted by Japanese scientists to determine how contagious it is and whether the vaccines will work.
Japanese experts identified the type after a detailed examination of the four passengers.
Japanese experts made the new type on January 6, while the passengers arrived from Brazil on January 2.
In Japan, too, there has been a record increase in the number of cases of code 19 in recent weeks, and an emergency has been declared in the capital, Tokyo.
Japan has also banned people from certain countries from entering its territory, while screening people coming from abroad to prevent the spread of new species that are considered more contagious.
The Code 19 vaccine, developed by the American company Pfizer and the German company BioNTech, is just as effective against the new strains of the corona virus discovered in South Africa and the United Kingdom.
This was revealed in a preliminary study conducted in the United States.
Pfizer released the results of a joint study with University of Texas researchers.
The study looked at the resistance of 20 volunteers to vaccines against new strains of the virus, which were developed in a laboratory.
The results showed that the new strains did not reduce the vaccine's ability to inactivate the virus.
According to research, Pfizer's vaccine proved effective against 16 different mutations in these new strains.
Both of the new starins are more dangerous than previous one and new cases in UK and SA.
New cases discovered in the UK have reached countries around the world, although travel restrictions have been re-imposed.
There is no evidence yet that these new strains increase the severity of the disease, but their rapid spread has certainly raised concerns.
Scientists have also expressed concern that a mutation in a new species discovered in South Africa could make it more resistant to vaccines.
The Pfizer vaccine was the first in the world to complete its trial and was found to be 95% effective in protecting against the disease, after which it was approved for use in the UK in December.
Leo Poon Litman, a professor at the University of Hong Kong's School of Public Health, said the University of Texas research was preliminary and had few volunteers, but the results were encouraging.
He said that although the number of people in the study was small, the vaccine was being used in different parts of the world, which meant that people were being protected to a reasonable extent.
Researchers at the University of Texas at Austin said they used a laboratory-developed virus that was not an ideal replica of the mutations found in new species, which could limit the results.
On the other hand, Mike Ryan, director of the World Health Organization's Health Emergencies Program, said on January 7 that work was under way to find out how effective vaccines are against new types, and the evidence so far was encouraging.
It was also confirmed by Public Health England and the UK Code 19 Sequencing Consortium, according to which the first sample was found on September 20 in Kent County.
It is the same protein that helps the virus to enter human cells, and such a large number of mutations are more noticeable than other types of this virus circulating around the world.
In the UK, data sharing, genomic surveillance and Code 19 test results suggest that this type is gaining ground over other types and is causing an increase in cases.
At the moment, this is only a possibility, but all the details in this regard are enough to raise concerns.
Is it more dangerous?
Chris White, the UK's chief medical officer, said there was no evidence that the new strain could change the severity of the disease, and that research was under way to confirm it.
How do mutations occur in viruses?
Most viral mutations generally have no side effects. During the first wave of the corona virus, thousands of mutations were observed in thousands of genomes, but none significantly changed the virus's ability to survive and multiply.
But many times a mutation or a combination of mutations in this new type gives the virus a new lease of life, giving it a greater chance of spreading.
Where did this type come from?
Little is known about this yet, and it seems to be the result of the evolution of the virus in the UK.
One idea is that a patient with a weakened immune system may have played a role in this type of preparation, but an investigation is under way.
How many types of Corona virus have been discovered so far?
There are thousands of variants of the new corona virus that differ from each other due to minor mutations.
In fact, there is almost no genetic diversity in the new corona virus worldwide.
So why is this new type different?
Most of these changes have already taken place during the epidemic.
But the combination and number of mutations in the British type or lineage is unusual. Connected to
Also of concern is the B117 lineage, which is found in the spike protein B117, which has increased the virus's ability to attack the human immune system.
All aspects remain to be examined in depth.
Will the vaccine affect?
It is unknown at this time what he will do after leaving the post, but it is possible that the mutation will not affect the effectiveness of the vaccine. Pfizer and BioNtech are working to test it.
A new strain of corona virus was discovered in the UK in mid-December and is now revealed to be spreading 70% faster than other strains.
According to a report in the Telegraph, the UK informed the World Health Organization on December 19 that this new strain of corona virus is spreading faster than others.
The new strain contains 23 different genetic mutations, most of which are related to parts of the virus that help the virus attach to human cells, he said.
According to Sir Patrick Valence, 60% of new cases in London are currently the result of this type, which is spreading rapidly and becoming the dominant type.
Italy, Belgium and Austria have suspended all flights and trains from the UK until December 21 following the discovery of a new strain of the virus in the UK, while similar measures are being considered by Ireland, France and Germany. Is.
Since the first genetic sequence of the new corona virus was developed in January, genetic changes have been observed.
Scientists are trying to determine if the new strain could spread more rapidly, whether it could exacerbate the disease in humans, and whether vaccines could be effective against it.
Sir Jeremy Farrar, director of the Welcome Trust, said the new type of code 19 was "worrying and worrying" and that further research was needed to find out, but immediate action was needed.
Daniel Ultaman, a professor of immunology at Imperial College London, said the data showed that the virus was more prevalent in south-east London.symotoms fatigue.
And now researchers have discovered the reason, which is not good news.
The study, published in the medical journal Nature Neurosciences, found in experiments on mice that spike proteins could cross the barrier between blood and brain.
This suggests that the corona virus may also enter the brain, which uses its spike protein, also called the S1 protein, to enter cells.
William A. Banks, who co-authored the study with the University of Washington School of Medicine and the Puget Sound Veterans Affairs Healthcare System, said that spike proteins usually help cells to enter, and destructive in nature.
The S1 protein could potentially force the brain to secrete cytokines and inflammatory molecules, he said.
In patients who become seriously ill as a result of code 19, severe immune system reactions often result in suspicion of cytokine storms that invade healthy cells, while brain fog, fatigue and other mental problems occur.
The researchers previously worked on blood-brain barriers in Alzheimer's, obesity, diabetes and HIV, but were stopped when 15 people in the laboratory began experimenting on the S1 protein.
The results of the study explain the various complications of Code 19.
"We know that cod can be difficult to breathe and can also affect the lungs," the researchers said, but our experiments showed that the male rats' sense of smell compared to the S1 protein was higher than that of the female.