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Genome sequencing ordered for all Covid cases for detection of JN.1: Delhi minister

Talking to PTI Video, he said the government has ramped up Covid testing, with 636 tests conducted on Wednesday.

December 28, 2023 / 12:42 IST
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Genome sequencing ordered for all Covid cases for detection of JN.1: Delhi minister

Delhi Health Minister Saurabh Bharadwaj on Thursday said he has reiterated directions for carrying out genome sequencing of positive cases so that cases of JN.1 variant can be confirmed.

Talking to PTI Video, he said the government has ramped up Covid testing, with 636 tests conducted on Wednesday.

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Bharadwaj had on Wednesday confirmed Delhi's first case of JN. 1 variant.

"I have reiterated the directions for genome sequencing of all the positive cases, so that the number of cases of new variants can be confirmed. Yesterday, three variants were confirmed, of which two were of the old Omicron variant and the new one is JN.1 variant. The good thing is that the patient diagnosed with the new variant, who was hospitalised, has been discharged," he told PTI Video.

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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