HomeNewsWorldShanghai extends COVID-19 lockdown till April 26 as death toll rises to 36

Shanghai extends COVID-19 lockdown till April 26 as death toll rises to 36

China on Thursday reported 2,119 locally transmitted confirmed COVID-19 cases, of which 1,931 were reported in Shanghai, according to the National Health Commission.

April 22, 2022 / 11:06 IST
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(Image: AP)
(Image: AP)

Shanghai has extended the COVID-19 lockdown to April 26, amid reports of growing public resentment as the eastern metropolis of 26 million reported 11 more deaths on Thursday, taking the toll in the current outbreak to 36.

China on Thursday reported 2,119 locally transmitted confirmed COVID-19 cases, of which 1,931 were reported in Shanghai, according to the National Health Commission.

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Shanghai has added 17,629 new cases in the previous 24 hours, 4.7 per cent fewer than a day earlier, according to data released on Friday, taking the city’s cumulative cases since March 1 to 443,500.

Symptomatic cases fell 26.7 per cent to 1,931, in the biggest one-day decline since the outbreak, Hong Kong-based South China Morning Post reported on Friday.

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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