HomeNewsWorldZero COVID policy not sustainable; shift strategy: WHO tells China

Zero COVID policy not sustainable; shift strategy: WHO tells China

As we all know the virus is evolving, changing its behaviour and becoming more transmissible. With that changing behaviour, changing your measures will be very important, Tedros Adhanom Ghebreyesus said.

May 11, 2022 / 13:46 IST
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China’s much-touted dynamic zero COVID policy came under sharp criticism from the WHO which termed it unsustainable in view of the constantly changing behaviour of the coronavirus and called on Beijing to shift its strategy.

World Health Organisation (WHO) Director-General Tedros Adhanom Ghebreyesus said this on Tuesday while commenting on China’s zero COVID policy under which many Chinese cities, including Shanghai and Beijing, were either under lockdown or semi-lockdown for prolonged periods.

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As we all know the virus is evolving, changing its behaviour and becoming more transmissible. With that changing behaviour, changing your measures will be very important, Tedros said.

When we talk about zero COVID strategy, we don’t think it is sustainable considering the behaviour of the virus now what we anticipate in the future, especially when we have now the good knowledge and understanding of the virus, he told a media briefing in Geneva.

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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