The Japan government has announced the closure of its borders to new foreign arrivals, and its own citizens must isolate on arrival from countries where the omicron variant has been found.

In an article published by Bloomberg News, Research Director Kenji Shibuya notes that “Border controls just buy us time,” adding that Japan “should do whatever it takes to prevent the spread of the variant.”

“Japan to Halt Entry by New Foreigners on Omicron Fears,” Bloomberg News
https://www.bloomberg.com/news/articles/2021-11-29/japan-to-shut-borders-to-foreign-visitors-on-omicron-ntv-says

Profile of Research Director Kenji Shibuya
https://www.tkfd.or.jp/en/experts/detail.php?id=653