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Delhi reports over 25,000 fresh coronavirus cases, 161 deaths in a day

A total of 85,620 tests, including 56,015 RT-PCR tests and 29,605 rapid antigen tests, were conducted the previous day, the bulletin said.

April 18, 2021 / 08:18 PM IST
Representative image (Source: Reuters)

Representative image (Source: Reuters)

Delhi on Sunday reported 25,462 COVID-19 cases, the highest single-day spike in the national capital till date, according to data shared by the Health Department. The city also reported 161 deaths, while the positivity rate shot up to 29.74 per cent, also the highest so far.

A day ago, 24,375 COVID-19 cases and 167 deaths were reported in the city.

With the fresh cases, the national capital's cumulative tally has risen to 8,53,460. The death toll stands at 12,121, according to the latest bulletin.

A total of 85,620 tests, including 56,015 RT-PCR tests and 29,605 rapid antigen tests, were conducted the previous day, the bulletin said.

So far, over 7.66 lakh patients have recovered in Delhi, it added. The number of active cases in the city increased to 74,941 from 69,799 the day before, the bulletin stated.

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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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The number of people under home isolation increased to 34,938 from 32,156 on Saturday, while that of containment zones mounted to 13,259 from 11,235 the day before, it said.

Follow our full coverage of the coronavirus pandemic here.
PTI
first published: Apr 18, 2021 08:17 pm

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