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Coronavirus vaccine update | India to vaccinate 300 million people by August: VK Paul

Over the last four days, Pfizer, Serum Institute of India (SII) and Bharat Biotech have applied to the DCGI seeking emergency use authorisation for their COVID-19 vaccines.

December 09, 2020 / 20:53 IST
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The government plans to vaccinate at least 300 million people by August 2021, said Dr VK Paul, the head of National Expert Group on COVID-19 vaccination. He said that the Centre would team up with local and global companies to secure adequate doses.

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"Our aspiration to vaccinate 300 million people will depend on the availability of enough number of vaccines. We hope given our vaccine production and development, it’s possibly within our grasp. Our vision for vaccination in the first phase may be a liberal one but we need to do this much to lower mortality impact," Paul told ET NOW.

Read: COVID-19 vaccine: Expert panel to review Pfizer, Serum, Bharat Biotech's emergency use applications today

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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