HomeNewsWorldMillions in new COVID lockdown as China keeps strict policy

Millions in new COVID lockdown as China keeps strict policy

Following additional COVID-19 outbreaks, China has once again placed millions of its citizens under lockdown, according to reports on Tuesday.

August 30, 2022 / 17:34 IST
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 (Image: Reuters)
(Image: Reuters)

China has placed millions of its citizens under renewed lockdown following fresh outbreaks of COVID-19, authorities reported Tuesday, as the government persists in its in its hard-line policy on containing the virus.

The measures affected about half of the 6 million residents of the port city of Dalian, along with an undisclosed number in Chengde and Shijiazhuang in Hebei province, both around three hours from the capital Beijing.

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Dalian’s lockdown was due to last five days, although authorities have in past extended restrictions depending on the number of new cases.

Beijing has been relatively unaffected thus far, although travel in and out of the capital has been discouraged and residents are subject to testing on an almost daily basis.

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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