HomeNewscoronavirusCOVID-19 update | Delhi adds 1,011 cases, positivity rate rises to 6.42%

COVID-19 update | Delhi adds 1,011 cases, positivity rate rises to 6.42%

The infection tally in the national capital now stands at 18,75,887 and the death toll at 26,170, the bulletin stated.

April 25, 2022 / 21:05 IST
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Delhi on Monday reported 1,011 fresh COVID-19 cases and one death, while the positivity rate rose to 6.42 per cent, according to the health department. The infection tally in the national capital now stands at 18,75,887 and the death toll at 26,170, the bulletin stated.

A total of 15,642 COVID-19 tests were conducted in the city the previous day, it said. Delhi on Sunday saw 1,083 COVID-19 cases with a positivity rate of 4.48 per cent, while one person died due to the disease.

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The capital had reported 1,094 COVID-19 infections on Saturday, the highest since February 10, with a positivity rate of 4.82 per cent and two deaths. Delhi had logged 1,042 cases with a positivity rate of 4.64 per cent and two fatalities on Friday. On Thursday, the city reported 965 COVID-19 cases with a positivity rate of 4.71 per cent and one death.

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: Apr 25, 2022 09:05 pm

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