HomeNewsHealth & FitnessCitizens queue up privately for third vaccine jab, as demand for booster dose gathers momentum

Citizens queue up privately for third vaccine jab, as demand for booster dose gathers momentum

Opposition politicians, doctors, virologists, and industry organisations are all demanding a third shot since the emergence of the Omicron variant, which is believed to be more infectious than Delta, though data about it remains relatively scarce

December 08, 2021 / 22:08 IST
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There is little data available on the latest Omicron variant, so experts are divided on the need for the third shot.
There is little data available on the latest Omicron variant, so experts are divided on the need for the third shot.

From rank aridity to a deluge. As compared to early 2021, when getting a first jab of Covishield sounded like a distant dream, to now, is a study of contrast. India is now flush with vaccines.

The incidences of people walking in and getting – or buying – a third dose of Covishield or Covaxin in private hospitals is gaining in numbers.

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Naturally then, calls for a vaccine booster inoculation – or a third jab - in India have grown louder. The trigger for this has been sparked by fears that waning immunity induced by earlier one or two rounds of vaccination may not suffice to forestall the potential threat of the Omicron, a corona variant, which is making waves in the developed western world.

In a statement on December 6, the Indian Medical Association (IMA), the apex body of medical professionals in the country, urged the government to begin administering an additional dose to front-line workers as well as to immuno-compromised individuals.

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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