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SEROLOGICAL SURVEY

  • February 5, 2021
  • Posted by: OptimizeIAS Team
  • Category: DPN Topics
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SEROLOGICAL SURVEY

Subject: Science & tech

Context: Nearly one in five Indians had been infected by the SARS-CoV-2 coronavirus until December 2020, the third round of the Indian Council of Medical Research’s Serological Survey found.

Concept:

Serological survey

  • The serological survey was meant to detect whether the person being tested had developed antibodies against the coronavirus.
  • Since it is not possible to test everyone, detecting antibodies in random sets of people is an indirect way of estimating the extent of disease spread in a community.
  • The antibodies are proteins produced by the immune system to fight external organisms like viruses that try to enter the body.
  • These are produced only after the infection has happened, and are specific to the attacking virus or bacterium.
  • The presence of antibodies, therefore, is an indication that an infection by that particular virus or bacterium has already occurred.
  • Subsequent attempts to infect the body can be thwarted by these antibodies.
Science and tech SEROLOGICAL SURVEY

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