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Pankaj Patel expects Zydus Cadila's potential COVID-19 vaccine to hit market by early 2021

"We are expecting the phase-1 and phase-2 studies to be completed in 3 months," Pankaj Patel said in an interview to Moneycontrol.

July 17, 2020 / 19:44 IST
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Pankaj Patel, Chairman of Zydus Cadila on July 17 said he expects the potential COVID-19 vaccine developed by the company to be ready for launch early next year. The company began human trials earlier this week.

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"We are expecting the phase-1 and phase-2 studies to be completed in 3 months," Patel said in an interview to Moneycontrol.

"Typically vaccine has to complete phase-1 and phase-2 study, then phase-3 study. Thereafter if the data is convincing. The vaccine will be approved," Patel 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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