HomeNewsIndiaCoronavirus Daily Update: COVID-19 cases explained in charts

Coronavirus Daily Update: COVID-19 cases explained in charts

India reported more than 46,000 COVID-19 new cases on March 22. Active cases rose to 3.34 lakh mark. Over 4.50 crore vaccinations administered till date.

March 22, 2021 / 11:30 IST
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File image: Volunteers distribute pamphlets during an awareness campaign on the spread of COVID-19 on a street in Mumbai, India on February 22, 2021. (Image: Reuters/Niharika Kulkarni)
File image: Volunteers distribute pamphlets during an awareness campaign on the spread of COVID-19 on a street in Mumbai, India on February 22, 2021. (Image: Reuters/Niharika Kulkarni)

As many as 46,951 new cases of novel coronavirus were reported in India, with total COVID-19 cases now at above 1.16 crore, as per the health ministry’s March 22 update. New cases reported were the highest in the last 130 days.

India reported 212 new deaths (highest in 72 days) and 21,180 new recoveries in the last 24 hours, the latest release shows. More than 4.50 crore vaccinations have been administered across India, according to the March 22 update, with 4,62,157 new vaccinations reported in a day. 

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Of the total vaccinations administered to date, 83 percent are recipients of their first dose while 17 percent have received the second dose. Among states, Rajasthan has administered the most 4.29 million vaccine doses, followed by Maharashtra (4.28 million) and Uttar Pradesh (4.13 million). 

Active cases rose to 3,34,646 with an increase of 25,559 cases on March 22, the highest ever single-day rise. Maharashtra now has the most (2,11,416 or 63 percent) active cases in the country, followed by Kerala (24,928) and Punjab (18,257).

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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