COVID-19: Delhi records seven fatalities, 865 fresh cases

With the fresh cases and fatalities, the national capital's caseload climbed to 20,37,061 and the death toll rose to 26,620.

PTI

April 27, 2023 / 22:32 IST

covid

Delhi reported seven Covid-related fatalities for the second consecutive day on Thursday and registered 865 fresh coronavirus cases with a positivity rate of 16.90 per cent, according to data shared by the city government's health department.

With the fresh cases and fatalities, the national capital's caseload climbed to 20,37,061 and the death toll rose to 26,620.

Of the seven fatalities, COVID-19 was the primary cause of death in three cases, the health department said in its bulletin.

The fresh cases emerged from 5,117 tests, including 3,599 RT-PCR/CBNAAT/True Nat tests, conducted the previous day, it said.

The number of active cases in Delhi stands at 4,279. Of these, 3,143 patients are in home isolation, it added.

COVID-19 Vaccine

Frequently Asked Questions

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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