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WHO panel to review Covaxin data for emergency-use listing on October 5

Inclusion of indigenously developed Covaxin in the WHO list will boost global acceptance of the Covid-19 vaccine.

September 22, 2021 / 15:41 IST
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Vial of Covaxin (File image)

A World Health Organization expert panel is scheduled to review the clinical trial data of Bharat Biotech’s Covid-19 vaccine Covaxin on October 5, according to the committee’s agenda for the meeting.

Following the review, the Strategic Advisory Group of Experts on Immunization (SAGE) will issue draft recommendations, which will be critical in the process of approving Covaxin for WHO’s Emergency-Use Listing (EUL).

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EUL is a risk-based procedure for assessing and listing unlicensed vaccines, therapeutics and in vitro diagnostics with the aim of expediting their availability to people affected by a public health emergency.

Inclusion of Covaxin in the WHO list will boost global acceptance of the vaccine, which was developed indigenously.

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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