HomeNewsWorldBeijing to test 20 million for COVID as lockdown jitters grow

Beijing to test 20 million for COVID as lockdown jitters grow

Amid comparisons with Shanghai, where more than 1,000 cases were reported in March before widespread curbs were finally imposed on 26 million people, many in Beijing flocked to supermarkets to stock up on food and supplies fearing sudden localised lockdowns.

April 26, 2022 / 10:55 IST
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(Image: AFP)
(Image: AFP)

Three-quarters of Beijing's 22 million people began lining up for COVID-19 tests on Tuesday as authorities in the Chinese capital raced to stamp out an outbreak and avert the kind of city-wide lockdown that has shrouded Shanghai for a month.

Beijing residents also began stocking up on food and supplies on worries of any sudden localised lockdowns, as frustration with tough curbs continues to mount in Shanghai, the Chinese financial and commercial hub that is home to 25 million people.

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Videos on social media show people leaning out of Shanghai windows to beat pots and pans in anger, or play "Do you hear the people sing?", a protest anthem from the musical "Les Miserables", on flutes and trumpets.

Trying to avoid a similar fate by acting early, Beijing began mass tests of 3.5 million people in its most populous district Chaoyang on Monday. By the end of the day, authorities listed 10 other districts and one economic development zone for mandatory tests this week, covering a total of 20 million people and ordering 16 million for tests on Tuesday.

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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