September 27, 2022

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What we do know about the Omigron variant that is rocking the world

The Omigron variant has been on everyone’s mind since it was identified and classified as a “worrying” variant by the WHO. We know a little more about Omigran every day, but there is still a lot that is unknown.

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For a few days the same word sounds on everyone’s lips: Omigron. The ‘WHO Named for the new variant of SARS-CoV-2 of concern according to 15e The writing of the Greek alphabet. Although the information is still fragmented, a Ventilation The Omigron variant has already left South Africa causing panic on Earth.

Transmission and intensity of the Omigron variant

S protein of the Omigron variant Door Impressive number of changes, exactly 32. more than that Delta variant, Who was about ten. Not all of these mutations affect its behavior Virus. On the other hand, it already has mutations in other types that know the escape effects Immune system And action Vaccines. All of these mutations do not mean that the Omigron variant causes a more severe form Govit-19. Information about the symptoms it causes and their evolution is still limited.

Omigron, re-infection and vaccination

The WHO is concerned Early components suggesting a higher risk of re-infection with omigran variant than others. This is to be confirmed in the coming weeks. Like everything Origin A Variation of SARS-CoV-2, Raises the question of the effectiveness of vaccines. At present, there is no evidence that vaccines lose their effectiveness against transmission and severe forms than is seen for vaccination. Variation Delta. Once again, it will be confirmed or rejected in the coming weeks. Other treatments for Govit-19, etc. Corticosteroids, Be useful.

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Omicron variant in the world

The Omigron variant, first discovered in South Africa and Botswana, was quickly discovered in Hong Kong. Cases have now been confirmed in Belgium, Israel, Italy, the United Kingdom, Austria, Canada and many more. In France, eight suspected cases are under investigation. Mutations in the Omigron variant make it possible to distinguish it from other types Equivalent PCR, The government is waiting for the results Sorting Full of sound Gene To confirm the presence of Omicron in the area. At this point, it is only a matter of time.

Faced with the already global circulation of the Omigron variant, Australia has decided to suspend the opening of its borders, still planned.There is Next December. Three weeks after easing entry restrictions, Japan is closing its doors to foreigners.

What we do know about the Omigron variant that is rocking the world

By article Julie KernReleased November 26, 2021

With the re-emergence of the Govt-19 epidemic across Europe, The Corona virus At the center of the message is once again. The new twist in this seemingly endless series: the identification of the hypermemute variant P1.1.529 in South Africa. The WHO urgently convenes on November 26, 2021 to discuss his case.

He did not appear last week. This leads to an emergency meeting of the World Health Organization on November 26, 2021. The new variant of SARS-CoV-2 is of particular concern to scientists Because he is “hypermute”. “ It appeared in the Johannesburg area on November 10 in South Africa. At the time of writing, 65 confirmed cases are listed in South Africa, 6 in Botswana and 4 in China (on Hong Kong Island). So fewer than 100 genetically sequenced and identified cases.

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The WHO has not yet decided on the profile of this variant: is it a variant of interest (VOI) or a concern (VOC)? If it was considered a VOC, it might have been named Nu variant to follow the tradition of the Greek script. Meanwhile, it is called P.1.1.529 to refer to its lineage Phylogenetic.

More than 30 mutations in the S protein of this SARS-CoV-2 variant

The scientific information on B.1.1.529 is very limited and not yet confirmed. But it has a significant number of mutations, more than 30, in its S protein, allowing it to enter its attachment and cells. Some of these mutations are present in the alpha and delta types AnalogyScientists fear that P.1.1.529 will also give the immune system the power to bypass. Decreases the effectiveness of vaccines.

The impact of mutations on the behavior of this new variant has not yet been confirmed. B.1.1.529 There is still little information about the health of those affected by the disease, so it is not possible to determine the severity of the symptoms it causes.

The heir of the delta variant?

Many countries, including France, have already announced that they will suspend their air links with South Africa and its neighbors to prevent the spread of B.1.1.529. Cases confirmed on Hong Kong Island are travelers from the country. If the origin of this variation appears to be of concern to the scientific community, the limited data available call for caution. Only one of the many variants of SARS-CoV-2 will precede the others.

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More scientific research is needed to see if we too face diversity Contagious Than the delta variant. In South Africa, The P1.1.529 variant spreads faster than the latter. The next few weeks will tell more about B.1.1.529.

Discover a podcast called Covipat dedicated to corona virus news

Every two weeks, join Julie Kern, Postgraduate Health Journalist in Infectious Disease, for an overview of the latest news and measures taken to combat the epidemic.

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