More than 2.88 crore balance and unutilised COVID-19 vaccine doses are still available with the states, UTs and private hospitals to be administered, the Union Health Ministry said on Thursday.
Over 47.48 crore vaccine doses have been provided to states and UTs so far through all sources and a further 53,05,260 doses are in the pipeline.
Of this, the total consumption including wastage is 44,74,97,240 doses, the ministry said
More than 2.88 crore balance and unutilised COVID-19 vaccine doses are still available with the states, UTs and private hospitals to be administered.
The new phase of universalization of COVID-19 vaccination commenced from June 21.
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.