HomeNewsTrendsHealthVaccine effectiveness of 99.3% seen in individuals fully inoculated against COVID: Mansukh Mandaviya

Vaccine effectiveness of 99.3% seen in individuals fully inoculated against COVID: Mansukh Mandaviya

Responding to a question, Union Health Minister Mansukh Mandaviya said the Indian Council of Medical Research (ICMR) has developed the India COVID-19 Vaccine Tracker, by merging mainly three national databases — CoWIN, National COVID-19 Testing database and COVID-19 India portal.

February 04, 2022 / 20:10 IST
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Source: Reuters
Source: Reuters

Vaccine effectiveness of 99.3 per cent has been seen in individuals fully inoculated against coronavirus according to the data uploaded on India COVID-19 Tracker till January 2, the Lok Sabha was told on Friday.

Responding to a question, Union Health Minister Mansukh Mandaviya said the Indian Council of Medical Research (ICMR) has developed the India COVID-19 Vaccine Tracker, by merging mainly three national databases — CoWIN, National COVID-19 Testing database and COVID-19 India portal.

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The tracker depicts vaccine effectiveness against death — the ability of vaccines to reduce death — using person time analysis from April 12, 2021 to January 2, 2022.

"The tracker is updated periodically and displays the effectiveness of partial and full vaccination against COVID-19."

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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