Friday, May 27, 2022

ਵਾਹਿਗੁਰੂ

spot_img





Omicron’s latest subvariant BA.2.12.1 proves virus not declining: Report

New York, May 2, 2022- Omicron’s latest subvariant BA.2.12.1, responsible for about one-fourth of Covid-19 cases in the US, shows that the virus is not showing any signs of decline even over two years after it was first detected in humans.

BA.2.12.1 has also been detected in Australia and New Zealand.

Preliminary research suggests it is about 25 per cent more transmissible than the BA.2 subvariant that is currently dominant nationally, according to the Centers for Disease Control and Prevention.

According to virologists, although the SARS-CoV-2 virus has repeatedly changed its structure and chemistry, it still has abundant evolutionary space to explore, Washington Post reported.

While existing vaccination can still reduce the risk of severe Covid disease, the variants can evade many of the neutralising antibodies that are the immune system’s front line of defence.

“It’s evolving at a fairly rapid rate. I do think we need to aggressively consider whether we should update vaccines, and do it soon,” Jesse Bloom, a computational biologist at the Fred Hutchinson Cancer Research Center in Seattle was quoted as saying.

“The evolution is much more rapid and expansive than we initially estimated,” added Michael Osterholm, infectious-disease expert at the University of Minnesota.

“Every day I wake up, I fear there will be a new subvariant that we will have to consider. . . We’re seeing sub-variants of sub-variants,” he added.

Other mutations include BA.4 and BA.5, recently identified by scientists in South Africa. It has led to a fresh wave of Covid in the country.

Besides South Africa, the sub variants have also been detected in more than 20 countries including Australia, Austria, Belgium, China, Israel, Denmark, France, Germany, Pakistan, UK, US and Switzerland.

Apart from mutation, the virus has another trick up its sleeve: recombination. It happens when two distinct strains infect a single host simultaneously and their genes become entangled, the Post reported.

The recombination process is the origin of what’s known as Omicron XE. That recombinant probably emerged from a person co-infected with the original Omicron variant and the BA.2 subvariant.

It was always possible in theory, but the identification of actual recombinants provides “proof of concept,” Jeremy Luban, a virologist at the University of Massachusetts Medical School was quoted as saying.

The worst-case scenario would be the emergence of a variant or recombinant that renders current vaccines largely ineffective at blocking severe disease. But so far, that hasn’t happened. And no “recombinant” has spread like Omicron or other recent variants and sub-variants, the report said.  (Agency

Subscribe to YesPunjab Telegram Channel & receive important news updates

- Advertisement -

Yes Punjab - TOP STORIES

Punjab News

Sikh News

Transfers, Postings, Promotions

- Advertisement -spot_img

Stay Connected

20,323FansLike
114,302FollowersFollow

ENTERTAINMENT

National

GLOBAL

OPINION

Making a career based on a hobby is a wise step – by Narvijay Yadav

In my first few years in journalism, my mind was so engrossed in the work that it seemed like fun to me. I was...

Trade focussed Quad – by Asad Mirza

The first in-person meeting of the leaders of the US, Australia, Japan and India, termed Quad, will be held in Tokyo on Tuesday. This...

How much and how often should courts adjudicate matters of religous fervour? – by Adeel Ahmed

New Delhi, May 22, 2022- In the old city of Jerusalem, there lies a 187-foot long ‘Western Wall, built by Herod on the western...

SPORTS

Health & Fitness

Preterm birth: Warning signs that indicate complications during pregnancy

New Delhi, May 23, 2022 - Preterm birth, defined as a baby born before 37 weeks of pregnancy, is a leading cause of infant death and can result in long-term disabilities for those who survive. Each year, approximately 1 million children die as a result of preterm birth complications. According to the World Health Organization, many survivors will live...

Gadgets & Tech