HomeNewscoronavirusRise in COVID-19 cases forces many Delhi-NCR schools to shut but experts allay fears

Rise in COVID-19 cases forces many Delhi-NCR schools to shut but experts allay fears

With cases rising in some pockets and many children reporting sick, people are worried this may be the beginning of the fourth wave of the COVID pandemic 

April 13, 2022 / 09:52 IST
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Representative image
Representative image

People with schoolgoing kids are on tenterhooks again after a number of students tested positive for COVID in a few National Capital Region schools, forcing the institutions to shut down temporarily.

But public health experts and epidemiologists say that unless the rising instances of COVID-19 cases result in growing hospitalisation numbers or severe disease there should be little to worry about. The cases may only be a sign that COVID-19 is reaching an endemic phase in the country, they add.

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Over the last two days, at least three schools in Ghaziabad and Noida, satellite towns of Delhi, have announced a complete halt in physical classes switching to online teaching after many students and some teachers tested positive for the coronavirus.

In one of the schools in Ghaziabad, 13 cases of COVID-19, including students as well as teachers, were reported following which the school announced a closure for a week.

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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