Coronavirus Daily Update: COVID-19 cases explained in charts

India reported less than 45,000 new cases according to official update, on November 25, continuing the streak for the 18th consecutive day of registering less than 50,000 new cases of novel coronavirus. Active cases in India continue below the 4.4 lakh mark, however reporting a rise of over 6,000 cases in a day.

Chaitanya Mallapur

November 25, 2020 / 01:03 PM IST

As many as 44,376 new cases of novel coronavirus were reported, with India’s total COVID-19 cases now above 92 lakh, as per health ministry’s November 25 update.

India reported 481 new deaths and 37,816 recoveries in the last 24 hours, the latest release show. Active cases up to 4,44,746 with a rise of 6,079 cases in a day.

Delhi reported the most (6,224) new cases in the last 24 hours, followed by Maharashtra (5,439), Kerala (5,420), West Bengal (3,545) and Rajasthan reporting an all-time high of 3,314 cases. These top five states account for more than half (54 percent) of all the new cases in India.

covid-19-update Nov 25

Daily deaths (481) continue below the 500-mark for the second day. Delhi reported the most 109 deaths (over 100 deaths for the fifth consecutive day), followed by West Bengal (49), Haryana (33), Uttar Pradesh (33) and Maharashtra (30). These five states account for 53 percent of all the new deaths reported across the country.

COVID-19 Vaccine

Frequently Asked Questions

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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