HomeNewsIndiaIndia approves Covishield, Covaxin vaccines in fight against COVID-19

India approves Covishield, Covaxin vaccines in fight against COVID-19

DCGI granting restricted emergency use approval for the two COVID-19 vaccines paves the way for India to start mass vaccination, with priority being given to healthcare and frontline workers among other high-risk groups

January 03, 2021 / 13:05 IST
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File image: A ground staff walks past a container kept at the Cargo Terminal 2 of Delhi's Indira Gandhi International Airport, which according to the officials will be used as a COVID-19 vaccine handling and distribution center. (Image: Reuters/Anushree Fadnavis)
File image: A ground staff walks past a container kept at the Cargo Terminal 2 of Delhi's Indira Gandhi International Airport, which according to the officials will be used as a COVID-19 vaccine handling and distribution center. (Image: Reuters/Anushree Fadnavis)

The Drugs Controller General of India (DCGI) on January 3 granted restricted emergency use authorisation for the Serum Institute of India (SII)’s ‘Covishield’ and Bharat Biotech’s ‘Covaxin’ vaccines against COVID-19, the disease caused by the novel coronavirus.

DCGI Dr. VG Somani said that clinical trials will continue. Both vaccines would be administered in two doses and need to be stored at 2-8 degrees Celsius.

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The ‘Covishield’ vaccine, developed by University of Oxford and pharmaceutical giant AstraZeneca, is being produced in the country by the Serum Institute. Bharat Biotech has developed ‘Covaxin’ – India’s first indigenous vaccine against COVID-19.

This came a day after the COVID-19 Subject Expert Committee (SEC) of the Central Drugs Standard Control Organisation (CDSCO) reportedly recommended grating emergency use authorisation for the vaccine developed by Bharat Biotech. On January 1, the SEC had given a similar conditional use recommendation for the Serum Institute of India (SII)'s vaccine. Both recommendations were "subject to certain regulatory conditions".

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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