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Coronavirus wrap May 23: COVID-19 vaccine development at an early stage in India

Here are the top developments of the day on COVID-19 crisis from India around the world

May 23, 2020 / 09:21 PM IST

COVID-19 cases in India saw the biggest spike for the second consecutive day on May 23 with 6,654 new infections in the last 24 hours, taking the tally to over 1.25 lakh, while the toll rose to 3,720 after 137 more deaths, the Union Health Ministry said.

The active cases of the coronavirus disease (COVID-19) rose to 69,597, while 51,783 people have recovered and a patient has migrated, according to the ministry bulletin.

"Thus, around 41.39 percent of patients have recovered so far," a Health Ministry official said.

Here are the top developments of the day:

> Future actions to stimulate the economy will depend on how COVID-19 crisis pans out, FM Nirmala Sitharaman says.

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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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> Resume cricket but only if there is no risk of spurt in local transmission, ICC says.

> Bank of Baroda to offer up to Rs 12,000 crore loans to MSMEs under the credit guarantee scheme.

> As many as 22 of 76 Haryana natives deported from US test corona-positive, state Health Minister Anil Vij says.

> AIIMS is preparing a database of critically ill patients to save them from coronavirus, official says.

> UK PM Boris Johnson is under pressure to sack top aide for coronavirus lockdown breach.

> PM Narendra Modi discusses the coronavirus situation with Sri Lankan Gotabaya Rajapaksa and Mauritius Prime Minister Pravind Jugnauth.

> COVID-19 vaccine development at an early stage in India; breakthrough unlikely within a year, experts say.

(With inputs from PTI)

Follow our full coverage on COVID-19 here.
Moneycontrol News
first published: May 23, 2020 09:21 pm

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