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Last Updated : Mar 27, 2020 07:46 PM IST | Source:

Coronavirus Essential podcast | US overtakes China with most cases; UK PM Boris Johnson tests positive

Tune in to Coronavirus Essential for the top updates on the pandemic.

While the Reserve Bank of India announces a rate cut of 75 bps, India has reported 724 cases of the novel coronavirus so far, according to the Ministry of Health and Family Welfare. A total of 67 people have been recovered so far and 17 dead.

The total number of cases in US have crossed the number of cases in Chin. The total cases in the world has crossed 5,33,000.


In this episode of Coronavirus Essential, Shraddha Sharma gives the top updates of the day while giving you tips on how to can stay engaged this weekend.

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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First Published on Mar 27, 2020 06:46 pm