Japan on Friday eased its borders restrictions for foreign tourists and began accepting visa applications, but only for those on guided package tours who are willing to follow mask-wearing and other antivirus measures as the country cautiously tries to balance business and infection worries.

Friday will be the first day to start procedures needed for the entry and arrivals are not expected until late June at the earliest, even though airport immigration and quarantine offices stood by for any possible arrivals.

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The Japan Tourism Agency says tours are being accepted from 98 countries and regions, including the United States, Britain, China, South Korea, Thailand and Singapore, which are deemed as having low infection risks.

Japan’s partial resumption of international tourism that was halted during the coronavirus pandemic is being carried out under guidelines based on an experiment conducted in late May. It involved about 50 participants, mostly tour agency employees from Australia, Singapore, Thailand and the United States.

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In one case, a tour for a four-member group was cancelled when one of the participants tested positive for COVID-19 after arriving in Japan.

“We expect the resumption of inbound tourism will help stimulate the local economy,” Minister of Land, Infrastructure, Transport and Tourism Tetsuo Saito told reporters Friday. “We will continue to make efforts to recover demand for tourism while balancing anti-infection measures and social and economic activities.”

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Under the guidelines, participants are requested to wear face masks most of the time and to purchase insurance to cover medical costs in case they contract COVID-19. The rules don’t set a cap for the number of people in one group, but tour guides must be present throughout the tour.

After facing criticism that its strict border controls were xenophobic, Japan began easing restrictions earlier this year. On June 1, it doubled its cap on daily entries to 20,000 people a day, including Japanese citizens, foreign students and some business travellers.

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The daily limit will include the package tour participants for the time being, and officials say it will take some time before foreign visitors can come to Japan for free, individual tourism.