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Last Updated : Aug 12, 2020 06:39 PM IST | Source: Moneycontrol.com

West Bengal government revises COVID-19 lockdown dates, withdraws curfew on August 28

The Mamata Banerjee-led West Bengal government had revised lockdown dates earlier as well.

The West Bengal government on August 12 revised the lockdown dates in the state again, withdrawing complete lockdown on August 28 and issuing fresh dates.

A complete lockdown in the state will now be observed on August 20, August 21, August 27 and August 31, the state government said.

The Mamata Banerjee-led West Bengal government had revised lockdown dates earlier as well. On August 3, the government had announced a revised list for the biweekly lockdown after it had received "several requests and appeals" from "different quarters to relax complete lockdown on certain dates which are coinciding with some festivals and local community based customs".

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On August 11, Bengal's COVID-19 tally breached the one lakh-mark  to reach 1,01,390 after 2,931 new infections were reported, the state health department said.

COVID-19 Vaccine

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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.

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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.

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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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The death toll also mounted to 2,149 with 49 fresh fatalities, the department said in a bulletin. Of these 49 people, 47 died due to comorbidities, according to the state government.
First Published on Aug 12, 2020 06:05 pm
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