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Kerala logs 15,058 fresh COVID cases, 99 deaths

The Test Positivity Rate (TPR) was recorded at 16.39 percent after testing 91,885 samples in the last 24 hours, a state government release said.

September 13, 2021 / 07:50 PM IST
Representative image

Representative image

Kerala on Monday logged 15,058 fresh COVID-19 cases and 99 deaths which pushed the total infections to 43,90,489 and the death toll to 22,650.

The Test Positivity Rate (TPR) was recorded at 16.39 per cent after testing 91,885 samples in the last 24 hours, a state government release said.

The bulletin also said that since Sunday, 28,439 people recovered from the infection taking the total number to 41,58,504 and the number of active cases to 2,08,773. Among the 14 districts, Thrissur recorded the highest with 2,158 case followed by Kozhikode (1,800), Ernakulam (1,694), Thiruvananthapuram (1,387), Kollam (1,216), Malappuram (1,199), Palakkad (1,124), Alappuzha (1,118) and Kottayam (1,027).

Of the new cases, 61 were health workers, 49 from outside the state and 14,336 infected through contact, with the source of the contact not being clear in 612 cases, it said.

There are currently 5,90,219 people under surveillance in various districts, of whom 5,60,694 are in home or institutional quarantine and 29,525 in hospitals.

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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.

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: Sep 13, 2021 07:50 pm

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