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HomeNewscoronavirusOmicron news roundup: All the important developments about the Covid variant you must know  

Omicron news roundup: All the important developments about the Covid variant you must know  

Country-music star takes on Covid-19 misinformation, countries work to make travel easier and answers to why some people get long-Covid, in today’s roundup of Omicron-related events from around the world

January 26, 2022 / 12:11 IST
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Researchers may have found some answers for long Covid, in this Omicron-led third wave. (Photo by Anna Tarazevich from Pexels)

EU to ease travel between bloc countries

Individual health status will soon be considered, as opposed to the health status of the country of origin, for allowing travel within the bloc. With an EU digital COVID certificate, travellers may soon be able to skip quarantine and additional testing. 

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Why is it important?

Many countries in the bloc have been working to reduce restrictions and lockdowns to help their economies recover. With Omicron proving to be less severe than the previous variants and the citizens increasingly coming out in protests, the governments are adopting this new strategy. WHO’s regional director Dr Hans  Luge has said that the new variant “offers plausible hope for stabilisation and normalisation”.  

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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