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Home / World / How worrying are the Covid variants in the UK, South Africa and Brazil?

How worrying are the Covid variants in the UK, South Africa and Brazil?



Michelle Roberts
BBC News Online Health Editor

coronavirus

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New variants of the coronavirus are emerging, and they are more infectious than the original variants that started the pandemic.

Scientists are urgently studying these variant versions to understand the threat they pose.

What are these new variants?

Currently, experts are focusing on a few new variants of the coronavirus:

  • A kind

    The British variant has dominated most of the UK and has spread to more than 50 other countries

  • A variant of South Africa, found in at least 20 other countries including the United Kingdom
  • New variant from Brazil

The emergence of new variants is not surprising-all viruses will mutate because they will make new copies of themselves to spread and flourish.

There are thousands of different versions or variants released by Covid.

Most of these differences are irrelevant. There are even some harmful to the survival of the virus. But some can make it more infectious or threatening.

How serious is this?

It is suspected that the British, South African and Brazilian variants may be more infectious or easier to capture than earlier versions.

The spike proteins of all three viruses have changed-this is the part of the virus that attaches to human cells.

As a result, these variants seem to be better at infecting cells and spreading.

Experts believe that the British or “Kent” strain appeared in September and the possibility of spreading or spreading is as high as 70%, although the latest research by the Department of Public Health of the United Kingdom shows that this strain is between 30% and 50%. It is this variant that drives the latest blockade across the UK.

The South African variant appeared in October, and its spike protein has greater potential and important changes than the British variant.

It has one of the same mutations as in the UK, and the other two scientists believe it may interfere more with vaccine efficacy. One of them may help the virus evade parts of the immune system called antibodies.

The United Kingdom has banned direct flights from South Africa and restricted flights to that country. Anyone who has recently been told to travel here, and anyone who has been in contact with them, should immediately be isolated.

The Brazilian variant appeared in July and was recently discovered among four travelers arriving in Japan from Brazil. It has three key mutations in the spike protein, making it similar to South Africa.

Because of this development, the British government has announced a ban on flights from South America and Portugal.

Is the vaccine still effective?

Current vaccines are designed for earlier variants, but scientists believe that although they may not be ideal, they should still work with new variants.

This is being checked in a laboratory study.

Vaccines train the body to attack multiple parts of the virus, but not just those parts of the spike protein.

There may be more variants that are different from the previous ones in the future.

Experts say that even in the worst-case scenario, the vaccine can be redesigned and adjusted to make it better matched-in a matter of weeks or months or months.

Like the flu vaccine, there are new drugs every year to explain any changes in the flu virus that is spreading, and a similar situation may occur with the coronavirus.

Are they more dangerous?

There is currently no evidence that any of them can cause more serious diseases.

Measures such as washing your hands, keeping your distance from others, and wearing a face mask will still help prevent infection, and because new variants are more likely to spread, you must be extra vigilant.

What are you doing?

There will be more variants.

Scientists all over the world are searching, and any new variants will be closely studied and monitored.

Researchers at the Kenya Medical Research Institute say they are analyzing a new variant that differs from the British and South African strains.

British Minister of Vaccine Development Nadhim Zahawi (Nadhim Zahawi) said that measures have been taken to produce another batch of vaccines if needed.

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