US will require COVID-19 testing for travellers from China

The increase in cases across China follows the rollback of the nation's strict anti-virus controls. China's "zero COVID" policies had kept China's infection rate low but fuelled public frustration and crushed economic growth.

PTI

December 29, 2022 / 07:07 IST

Representative image (Source: Shutterstock)

The US announced new COVID-19 testing requirements on Wednesday for all travellers from China, joining other nations imposing restrictions because of a surge of infections.

The increase in cases across China follows the rollback of the nation's strict anti-virus controls. China's "zero COVID" policies had kept China's infection rate low but fuelled public frustration and crushed economic growth.

Beginning Jan. 5, all travellers to the US from China will be required to take a COVID-19 test no more than two days before travel and provide a negative test before boarding their flight. The testing applies to anyone 2 years and older.

Other countries have taken similar steps in an effort to keep infections from spreading beyond China's borders. Japan will require a negative COVID-19 test upon arrival for travellers from China, and Malaysia announced new tracking and surveillance measures. India, South Korea and Taiwan are requiring virus tests for visitors from China.

Lunar New Year, which begins January 22, is usually China's busiest travel season, and China announced Tuesday it will resume issuing passports for tourism for the first time since the start of the pandemic in 2020.

COVID-19 Vaccine

Frequently Asked Questions

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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