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Home Science & Tech

Delta plus variant of COVID virus

June 26, 2021
in Science & Tech
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Delta plus variant of COVID virus
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Recently, Maharashtra reported the first death due to Delta plus variant coronavirus.

What is the Delta plus variant of COVID virus?

  • The new Delta plus variant has been formed due to a mutation in the Delta or B.1.617.2 variant, which was first identified in India.
  • It is formally known as AY.1 or B.1.617.2.1.
  • The mutation is the result of the Delta variant acquiring the spike protein mutation K417N to form what is scientifically known as the AY.1 variant. 
  • K417N has previously been identified in the Beta variant (first found in South Africa) and the Gamma variant (first detected in Brazil). 
  • These variants are characterised as being highly infectious and may reduce the potency of vaccines.
  • It is undergoing mutations in various geographies and that these mutations are displaying more transmissibility and potential reductions in monoclonal antibody response.

 

  • The concern is that because the Delta variant has a cavalcade of mutations that have allowed it to dominate in several countries, including India, another form may pose new challenges to the management of the pandemic in India.
  • According to CSIR-Institute of Genomics and Integrative Biology, the mutation was associated with resistance to a newly developed monoclonal antibody treatment drug, Casirivimab and Imdevimab, for those with moderate and severe disease but at high risk.

WHO list of variants of concern-

  • It includes Alpha, Beta, Delta, and Gamma variants.  
  • There is little evidence so far specifically linking AY.1 to large outbreaks and significant disease transmission, and hence Delta variant has not yet appeared in the list
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Source: The Hindu
Tags: PrelimsThe Hindu

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