New coronavirus strain – what is currently known about it – archyde

Where and when a new variant of COVID-19 was discovered

The first reports of infections with a new mutation of the coronavirus appeared on November 23. The cases were confirmed in Gauteng Province in South Africa in 77 patients.

The virus was also registered in 4 people in Botswana. A sick man flew to from South Africa Hongkongwhere the diagnosis was made.

The South African Epidemiological Center estimates that about 90% of new cases are in the Gauteng region of South Africa caused by a new option… But the virus could already have spread to 8 other provinces in South Africa.

The first infected person was found in Israel 11/25 The sick man came into the country from the Republic of Malawi.

For now Variant of the coronavirus with the designation B.1.1.529, but the WHO will probably assign the mutation the Greek name in the future not.

An evolutionary leap: South African tribe has surpassed Delta in the number of mutations

Research in the new version of SARS-CoV-2 in just 3 days found 2 times more mutations than in “Delta.”“.

At the South African Epidemic Response Center, they report that this strain has developed a lot. This revealed the greatest number of mutations, and more than 30 of them are in the spike protein, which opens the “doors” of human cells for the virus to enter.

Five times more mutations are found in the receptor-binding part of the virus, which makes the first contact with the body’s cells. For a large-scale infection, Delta needed 2 such mutations.

However, the researchers believe that a variety of changes in the structure of the virus may not clearly be a bad indicator. The way mutations work is important.

Why is the “South African” variety dangerous?

Scientists have not yet made any statements about the degree of endangerment of the variety from South Africa. There is not yet enough time to explore the new variant of COVID-19, but there is cause for concern.

Some of the mutations discovered facilitate the rapid spread of the viruswhich can lead to a rapid increase in the number of infected people.

British virologists suggest that mutations produce viruses high transferability and resistance to vaccines… According to them, the combination of changes in the protein in the new variant is “terrifying”, and it maybe “worse than anything”.

What is known about the effectiveness of vaccines against a tribe from South Africa

A large number of mutations are found in the virus’ spike protein which is the “kill” target for many vaccines, particularly Pfizer, Moderna.

Among the mutations are those that make it difficult for antibodies in the human body to detect the viruswhich may make the vaccine less effective.

Scientists also have concerns that the new version is radically different from the Wuhan version made in China. This means vaccines developed using the parent strain may not be as potent.

It should be noted that all of the studies of the new variant of the virus took place in South Africa, where the proportion of the fully vaccinated population is less than 50%. It is therefore premature to draw any conclusions about the degree of risk to the immune system of vaccinated persons.

WHO convenes an emergency meeting

On Friday, November 26th, WHO will hold an emergency meeting to discuss option B.1.1.529 Sars-Cov-2.

Given the information about the potential danger of the new strain, the World Health Organization will decide whether to consider it Tribe from South Africa “worrying” (like the Alpha, Beta, Gamma and Delta discovered earlier) or an “interesting variant” (with predictable or known genetic changes).

The “concern variant” means that the virus has a high pathogenicity, transmission rate. In the fight against this, the effectiveness of public health funds, including vaccinations, is falling.

If a “worry variant” is assigned to the line B.1.1.529, it is called Nu.

Countries restrict entry from South Africa

Against the background of the danger of the spread of a new coronavirus strain from November 26, 12:00 p.m. Great Britain Flight bans from South Africa, Namibia, Botswana, Zimbabwe, Lesotho and Eswatini. Anyone returning to the UK from these countries will be immediately quarantined.

A flight ban will apply from November 26th Netherlands from South Africa. Czech Republic announced the closure of borders to those arriving from South Africa, Namibia, Lesotho, Swaziland, Zimbabwe, Botswana, Mozambique and Zambia from November 27 to December 12.

V Germany From November 27th, air traffic with South Africa will be restricted. The airlines are only allowed to operate export flights for German citizens in South Africa.

Authorities Singapore From November 28, travel restrictions will apply to travelers from Botswana, Eswatini, Lesotho, Mozambique, Namibia, South Africa and Zimbabwe.

From November 25th Israel Entry bans from a number of countries. South Africa, Lesotho, Botswana, Zimbabwe, Mozambique, Namibia and Eswatini were added to the “red” list. Prime Minister Naftali Bennett said the country is on the verge of an emergency due to new strain.


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