HomeNewsIndiaTN reports 6,986 fresh COVID cases, 85 fatalities

TN reports 6,986 fresh COVID cases, 85 fatalities

Chennai accounted for 94,695 of the state tally of 2,13,723 cases.

July 26, 2020 / 20:02 IST
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Representative image
Representative image

Tamil Nadu on Sunday reported 6,986 fresh COVID cases, taking the tally to 2,13,723 while the death toll touched 3,494 with 85 fatalities. Of the newly identified people with COVID, seven were from abroad and 68 from other states, a health department bulletin said.

While Chennai reported 1,155 cases, the combined new infections in three neighbouring districts of Chengelpet (501), Kancheepuram (363) and Tiruvallur (480) overshot the state capital's count by recording 1,344 positive cases.

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Chennai accounted for 94,695 of the state tally of 2,13,723 cases. The deceased include a 37-day-old baby boy from Tiruvannamalai with low birth weight, a 15-year-old girl and a 28-year-old man.

In total, 75 had co-morbidities and 10 none. Of the 3,494 fatalities, Chennai's share was 2,011. As many as 64,129 samples were tested today and till date 23,51,463 specimens have been examined. With the recent approval for a private lab in Coimbatore, there are 116 COVID testing centres (58 government labs and an equal number in private facilities) in Tamil Nadu.

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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