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HomeNewscoronavirusGreater efforts needed to get routine immunization back to pre-Covid times: WHO

Greater efforts needed to get routine immunization back to pre-Covid times: WHO

New Delhi, July 16 The World Health Organization on Saturday called for greater efforts in the South-East Asia Region to revive routine immunization..

July 16, 2022 / 15:43 IST
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The World Health Organization on July 16 called for greater efforts in the South-East Asia Region to revive routine immunization rates to pre-Covid times, stressing that despite concerted efforts by countries, challenges and gaps persist.

"Commendably the region has administered 3 billion doses of COVID-19 vaccines to date, since January 2021 when the first dose of vaccine was administered in the South-East Asia Region. As we focus on further scaling up COVID-19 vaccination coverage, we must also do all we can to ensure no child is deprived of life-saving vaccines offered under routine immunization services," said Dr Poonam Khetrapal Singh, Regional Director WHO South-East Asia.

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Many counties have demonstrated that routine immunization can be maintained or scaled up along with COVID-19 vaccination, she said in a statement. "This speaks to a very committed health work force which has to manage both considerable challenges." Bangladesh, Maldives, Sri Lanka and Thailand maintained high vaccination rates over 95 per cent DTP3 coverage throughout the COVID-19 pandemic.

Bhutan witnessed a slight decline in 2020 but surpassed its pre-pandemic coverage of 97 per cent to record 98 per cent DTP3 coverage in 2021, it said. Globally, DTP3 (third dose of vaccines for diphtheria, tetanus and pertussis) in one-year old children, is a proxy indicator for immunization coverage, it said.

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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