India on Thursday saw the biggest single-day jump of 495 Omicron cases, taking the total number of infections of the new variant of coronavirus to 2,630, according to Union health ministry data.
Of the total cases, Maharashtra has the maximum at 797, followed by Delhi at 465, Rajasthan 236, Kerala 234, Karnataka 226, Gujarat 204 and Tamil Nadu 121.
Meanwhile, 90,928 new coronavirus infections were reported, the highest in over 200 days, taking India’s caseload to 3,51,09,286, the data stated.
The death toll climbed to 4,82,876 with 325 fatalities, it said. The number of active cases stands at 2,85,401, comprising 0.81 percent of the total infections, the ministry said.
Frequently Asked Questions
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.