HomeNewsIndiaOvercrowding at COVID-19 vaccination centres cause of concern: Health experts

Overcrowding at COVID-19 vaccination centres cause of concern: Health experts

With the Mumbai Metropolitan Region and the state of Maharashtra reporting resurgence in COVID-19 cases, citizens were seen scrambling to get vaccinated.

March 04, 2021 / 13:30 IST
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People wait in a line outside a vaccination centre to receive a dose of the COVID-19 vaccine in Mumbai, India on March 2, 2021. (Image: Reuters/Francis Mascarenhas)
People wait in a line outside a vaccination centre to receive a dose of the COVID-19 vaccine in Mumbai, India on March 2, 2021. (Image: Reuters/Francis Mascarenhas)

COVID-19 vaccination centres in many parts of the country have been witnessing large crowds since March 2, a day after the second phase of the nationwide inoculation drive was launched.

Long queues and large congregations at vaccination sites were observed especially in the Mumbai Metropolitan Region (MMR). While priority was earlier given to healthcare and frontline workers, the general public – everyone above the age of 60 and those over 45 years with comorbidities – has been allowed to get vaccinated.

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Mumbai and its neighbouring areas, considered India’s largest financial hub, have been severely impacted by the novel coronavirus pandemic. With the city and the state of Maharashtra reporting resurgence in COVID-19 cases, citizens were seen scrambling to get vaccinated.

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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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