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Coronavirus third wave: Karnataka begins genome sequencing of children to prepare

The move to study genome sequences of the virus that infected children is part of Karnataka's effort to prepare for the third wave of infections.

June 17, 2021 / 13:52 IST
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The move to study genome sequences of the virus that infected children is part of the state's effort to prepare for the third wave of infections. Representative picture

Karnataka has started genome sequencing of the SARS-CoV-2 virus among children who tested positive during the second wave to determine whether the infections are being caused by the newer variants of the virus.

The state has tasked Prof V Ravi, a former professor of virology, to study the gene sequences in samples of children who tested positive for COVID-19, as per an Indian Express report.

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Ravi said that samples are being collected and they need to be processed. "We should have data and information in about 15 days,” he said, as quoted by the publication.

COVID-19 Vaccine
Frequently Asked Questions

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How does a vaccine work?

A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.

How many types of vaccines are there?

There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.

What does it take to develop a vaccine of this kind?

Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
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