Air travel curbs ‘ineffective in capping COVID-19 spread’: Japan

6 月 16, 2022World News

ACI Asia-Pacific, a region of the Airports Council International (ACI), has recommended the government of Japan for a complete removal of international air travel restrictions, indicating that the industry cannot fully recover amid curbs.

The recommendation comes despite considering Japan’s decision to remove border measures imposed in the country in response to the Covid-19 pandemic as a positive step,

According to the latest circular from the Government of Japan, nearly 200 countries will be divided into three risk categories – red, yellow and blue – which will determine whether or not visitors can bypass quarantine and be subject to more simplified Covid-19 testing measures, according to Japan’s Ministry of Foreign Affairs.

The requirements still in force to access the country, however, will likely hamper the positive direct, indirect and catalytic impact that air transport has on the national economy.

An independent study was commissioned by ACI Asia-Pacific and was undertaken by Oxera and Edge Health to analyse the effectiveness of travel restrictions. The study, based on modelling different scenarios of Covid-19 variants of concern with similar or higher level of infectiousness than the current Omicron, revealed that travel restrictions such as quarantine and testing would be ineffective in mitigating the spread of Covid-19.

The potential gain in delaying the peak of Covid-19 cases by a few days based on the severity of measures applied would not outweigh the damage on the economy and the society.

Key findings:

• It is difficult to quickly identify a variant as a VOC (Variants of Concern) to be able to introduce travel restrictions that have a meaningful impact.

• Impose ongoing air travel restrictions will have minimal benefits in preventing the spread of any potential new variants, and the significant direct and indirect costs to the economy would need to be taken into account.

• Air travel restrictions have no impact on the size of the peak and could delay the surge in transmission rate by a few days with a pre-departure test, or ten days, in certain circumstances, with a pre-departure and an on-arrival tests. This will only be the case, however, if restrictions are imposed on the same day that the variant is first imported (which is likely to be before the variant is actually identified as a VOC)

• If restrictions are imposed only one week after the variant is imported, there is at most a benefit of delaying the peak by three days, even if both pre-departure and on-arrival tests are introduced.

It is difficult to predict what will happen in the longer term (e.g. natural immunity could be greater, meaning even less infectious variants could become dominant; or natural immunity could wane such that Omicron becomes dominant again), so it will be important to consider the longer- term picture again as more data becomes available.

However, based on the findings of this study and on the experience gained in other regions of the world, it is possible to set general principles for imposing travel restrictions:

• Travel restrictions should be removed once seeded cases exceed the level beyond which such restrictions would make a material difference to the trajectory of infections

• Travel restrictions should be imposed only if they can have a meaningful impact on the peak and/or timing of cases; otherwise, they should not be imposed at all

• The costs of imposing any restrictions should be balanced against the benefits

“Curbs on international travel does little to prevent the spread of Covid-19 but leads to significant impact on the economy, causing the loss of jobs and businesses. Analysis shows that travel restrictions have, to a large degree, failed to prevent the spread of Covid-19 and have turned out to be a deterrent for the recovery of aviation,” said Stefano Baronci, Director General, ACI Asia-Pacific.

In the last few months, many Asian countries have abolished travel restrictions on both business and leisure travel, following the practice already applied by other regions in the world. An increasing number of countries such as Cambodia, Singapore, India, Thailand, Malaysia and Australia have also withdrawn the restrictions on international air travel, without negatively impacting the health care system at national level.

Preliminary statistics from Phnom Penh, Singapore, New Delhi, Bangkok (Suvarnabhumi), Kuala Lumpur and Brisbane show that, in aggregate, passenger traffic have increased substantially between the end of February and May 2022.

A fundamental pre-requisite for this progression has been the increasing level of vaccination, covering approx. 70% of the population across Asia-Pacific and Middle East. On the contrary, travel to and from Japan is limited to a daily cap, with requirements for pre-departure testing, on-arrival testing, and/or quarantine for passengers arriving from certain countries.

“The Government of Japan has taken conscious step to reopen boarder June 1, but with certain limitations. However, we recommend full freedom of movement for fully vaccinated passengers, including removal of testing,” Baronci said.

The continued limitations due to the restrictions of air travel in Japan has had a massive repercussion on the overall recovery of the industry in the Asia, Pacific and the Middle East. This is posing a challenge for the industry in Asia-Pacific and Middle East region anxiously waiting for revenue opportunities that could help spark recovery.


Japan, a dominant player in the aviation sector, can support the recovery of air travel across Asia- Pacific and Middle East once fully opened. Removing all Covid-19 restrictions will restore freedom to travel and will be a greater boost for the whole travel and tourism sectors.


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