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Delta variant of Covid-19

  • August 24, 2021
  • Posted by: OptimizeIAS Team
  • Category: DPN Topics
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Delta variant of Covid-19

Subject – Science and Tech

Context – Delta variant spreads more rapidly than other Covid-19 strains

Concept –

  • Key mutations reduce effectiveness of vaccines, and high infectiousness during the pre-symptomatic phase in patients are among the main reasons fuelling the rapid spread.
  • Delta variant (B.1.617.2) is at least 40 per cent more transmissible than the Alpha variant first identified in the UK in late 2020.
  • Delta variant is more transmissible than the viruses that cause MERS, SARS, Ebola, the common cold, the seasonal flu and smallpox, and it is at least as contagious as chickenpox.
  • Recent research suggests that a key amino acid mutation may be behind the ferocious infectivity of the Delta variant.
  • The change is called P681R and transforms a proline residue into an arginine, according to a report on the study published in Nature journal. The change occurs in the spike protein’s furin cleavage site.
Delta variant of Covid-19 Science and tech

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