HomeNewscoronavirusSerum Institute of India begins manufacture of Codagenix's nasal COVID-19 vaccine candidate

Serum Institute of India begins manufacture of Codagenix's nasal COVID-19 vaccine candidate

Serum Institute has received necessary regulatory approval from the Review Committee on Genetic Manipulation (RCGM) of India's Department of Biotechnology (DBT) for manufacturing Codagenix's COVID-19 vaccine candidate. It is one of the first to use a weakened version of the coronavirus, unlike other vaccine candidates.

September 22, 2020 / 19:51 IST
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Serum Institute of India has started manufacturing a COVID-19 vaccine candidate developed by Codagenix Inc. Dubbed the DX-005, the coronavirus vaccine has completed pre-clinical animal studies. The drug maker aims to initiate phase I clinical trial of its COVID-19 vaccine in the United Kingdom by the end of 2020, according to a statement by the US drugmaker.

"Today marks an important step in our efforts to advance the development of CDX-005," said Dr J Robert Coleman, chief executive officer (CEO) of Codagenix, adding that with Serum Institute's financial and technical support, it expects to get the vaccine into the clinic before the end of 2020.

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The American company has tied up with the Serum Institute of India, which is currently the largest vaccine-maker by number of doses produced in the world.

According to claims made by the vaccine maker, the pre-clinical study has showed promising results. "Pre-clinical testing of a single, intranasal dose of CDX-005 in animals has yielded encouraging safety and efficacy signals," it said.

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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