HomeNewsTrendsHealthRelief as COVID-19 uptick in Delhi shows signs of slowdown

Relief as COVID-19 uptick in Delhi shows signs of slowdown

The daily COVID-19 cases and test positivity rate in the national capital have hovered around 1,000 and 4-5 percent over the last five days. They are now showing signs of plateauing.

April 25, 2022 / 14:33 IST
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Representative image
Representative image

The rising COVID-19 infections in Delhi and adjoining areas had triggered fears of a possible fourth wave of COVID-19 across the nation, but a slowdown in new cases in the national capital has come as a breather for health administrators in the country.

Union health ministry officials pointed out that the number of daily COVID-19 cases in Delhi have been hovering around 1,000 for the last five days. While nothing could be said definitively, it was unlikely the recent surge will lead to a major COVID-19 wave.

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In Delhi, where the number of daily cases had dropped below 50 and the COVID-19 test positivity had plummeted under 1 percent, there had been an uptick in cases, beginning the second week of this month.

The daily infection in the capital crossed the 1,000-mark on April 20 this year after more than two months. The daily test positivity rate, too, has reached about 4.8-5 percent and a similar pattern was observed in some districts adjoining Delhi, in Uttar Pradesh and Haryana.

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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