HomeNewsWorldChina to impose COVID-19 tests on Lunar New Year travellers as infections rise

China to impose COVID-19 tests on Lunar New Year travellers as infections rise

Millions of residents in Hebei province surrounding Beijing, the northeastern Jilin province and Heilongjiang have been put into lockdown in recent weeks amid what is the worst wave of new infections since March 2020.

January 21, 2021 / 12:02 IST
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Source: Reuters
Source: Reuters

China plans to impose strict COVID testing requirements during the Lunar New Year holiday season, when tens of millions of people are expected to travel, as it battles the worst wave of new infections since March 2020.

Millions of residents in Hebei province surrounding Beijing, the northeastern Jilin province and Heilongjiang have been put into lockdown in recent weeks amid what is the worst wave of new infections since March 2020.

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Authorities are asking people to stay home during the Lunar New Year holidays in February as part of the efforts to prevent another debilitating outbreak. Local governments that have so far not seen major outbreaks are also introducing new curbs, including one city in southwestern China barring entry to any overseas foreigners.

A total of 144 new cases were reported on Jan. 20, the National Health Commission said on Thursday, matching the total reported on Jan. 14 and marking the highest number of daily infections since March 1. This still remains a fraction of what China saw during the height of the outbreak in January-February 2020, however.

COVID-19 Vaccine
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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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