Desk Report
Publish: 04 Jan 2022, 10:44 pm
Representational Image || Photo: Collected
As the world grapples with the highly mutated Omicron
variant of SARS-CoV-2, scientists have identified a new strain of the COVID-19
causing virus in Southern France.
Known as 'IHU', the B.1.640.2 variant has been reported by
researchers at institute IHU Mediterranee Infection in at least 12 cases, and
has been linked to travel to African country Cameroon.
However, the researchers noted that it is too early to
speculate on how this variant behaves as far as infection and protection from
vaccines are concerned.
The yet-to-be peer-reviewed study, posted on the preprint
repository MedRxiv on December 29, revealed that IHU has 46 mutations and 37
deletions resulting in 30 amino acid substitutions and 12 deletions.
Amino acids are molecules that combine to form proteins, and
both are the building blocks of life.
Fourteen amino acid substitutions, including N501Y and
E484K, and nine deletions are located in the spike protein.
Most currently used vaccines are targeted at the spike
protein of SARS-CoV-2, which the virus uses to enter and infect the cells.
N501Y and E484K mutations were earlier also found in Beta,
Gamma, Theta and Omicron variants.
"The mutation set and phylogenetic position of the
genomes obtained here indicate based on our previous definition a new variant
we named IHU," the authors of the study said.
"These data are another example of the unpredictability
of the emergence of SARS-CoV-2 variants, and of their introduction in a given
geographical area from abroad," they added.
The B.1.640.2 has not been identified in other countries so
far or labelled a variant under investigation by the World Health Organization
(WHO).
According to the researchers, the index (first) case was an
adult diagnosed positive by RTPCR performed in a laboratory on a nasopharyngeal
sample collected in mid-November last year.
Epidemiologist Eric Feigl-Ding posted a long Twitter thread
in which he said that new variants keep emerging but it does not necessarily mean
they will be more dangerous.
"What makes a variant more well-known and dangerous is
its ability to multiply because of the number of mutations it has in relation
to the original virus," Feigl-Ding tweeted on Tuesday.
"This is when it becomes a "variant of
concern" - like Omicron, which is more contagious and more past immunity
evasive. It remains to be seen in which category this new variant will
fall," he said.
Many countries are currently experiencing a spike in
COVID-19 cases driven by the Omicron variant which was first identified in
South Africa and Botswana in November last year.
Since then, the variant of concern has spread to over 100
countries.
In India, a total of 1,892 cases of Omicron variant have
been detected across 23 states and Union Territories so far.
Subscribe Shampratik Deshkal Youtube Channel
© 2024 Shampratik Deshkal All Rights Reserved. Design & Developed By Root Soft Bangladesh