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Coronavirus pandemic | Mumbai's count of COVID-19 cases jumps to 6,875; death toll 290: BMC

According to the civic body, 45 patients were discharged from various hospitals on Thursday, taking up the number of recovered cases to 1,472.

April 30, 2020 / 09:58 PM IST
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File image

With the addition of 417 new coronavirus positive cases on Thursday, the number of COVID-19 patients in Mumbai city rose to 6,875, the Brihanmumbai Municipal Corporation (BMC) said.

The death toll in the metroplis went up to 290 as 20 more persons died due to the infection, it said.

According to the civic body, 45 patients were discharged from various hospitals on Thursday, taking up the number of recovered cases to 1,472.

As many as 498 suspected patients have been admitted to various hospitals in the city, the BMC said.

Sources in the civic body said 1,459 containment zones have been created in the city, where at least one coronavirus positive or suspected patient found.

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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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PTI
first published: Apr 30, 2020 09:50 pm

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