The new coronavirus cases reported in India in a span of 24 hours remained below 45,000, even as the total COVID-19 caseload inched closer to 80 lakh, the Union health ministry said on Wednesday.
The country’s COVID-19 caseload mounted to 79,90,322 with 43,893 fresh cases being reported in a day, while the death toll climbed to 1,20,010 with 508 new fatalities, the ministry data updated at 8 am showed.
A total of 72,59,509 people have recuperated from COVID-19 so far, pushing the national recovery rate to 90.85 percent, while the case fatality rate stands at 1.50 percent.
The active cases of coronavirus infections remained below 7 lakh for six days in a row, it said.
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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.
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.
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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There are 6,10,803 active cases of coronavirus infection in the country as on date, which comprises 7.64 percent of the total caseload, the data stated.
India’s COVID-19 tally had crossed the 20-lakh mark on August 7,30 lakh on August 23 and 40 lakh on September 5.
It went past 50 lakh on September 16,60 lakh on September 28 and crossed 70 lakh on October 11.
According to ICMR, accumulative total of 10,54,87,680 samples have been tested up to October 27, with 10,66,786 samples tested on Tuesday.
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