HomeNewscoronavirusCoronavirus wrap July 7: Brazil Prez Jair Bolsonaro tests positive; Strict lockdown in Bengal's containment zones

Coronavirus wrap July 7: Brazil Prez Jair Bolsonaro tests positive; Strict lockdown in Bengal's containment zones

At present, India is the third worst-affected country, only after the United States and Brazil.

July 07, 2020 / 22:37 IST
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With nearly 1 lakh fresh cases in the last 5 days, India's COVID-19 case count has crossed 7 lakh, and the death toll due to the infection over 20,000. There are around 2.59 lakh active cases of coronavirus in the country at present. However, the country's total case tally has been on the rise with a daily increase of over 20,000 fresh cases.

Globally, there are over 1.1 crore reported cases of coronavirus and over 5.35 lakh people across the world have lost their lives due to the infection, as per the latest update by the World Health Organisation (WHO). At present, India is the third worst-affected country, only after the United States and Brazil.

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Here are the top developments of the day:

> Brazil President Jair Bolsonaro, who has drawn widespread criticism for downplaying the coronavirus as "a little flu", has tested positive for COVID-19.

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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