Originally Posted by
moondog
My boss (US citizen) is going to Tokyo at the end of this month and forwarded the Visit Japan site to me because he was alarmed by its use of the word "quarantine" because it has a decidedly negative connotation here in China. I told him not to sweat the nomenclature but figured I should confirm here first. Thanks in advance, all.
Procedures for a "fully vaccinated" US citizen just means completing the necessary forms and providing proof of vaccination. For a person who cannot provide proof of vaccination and booster, the procedure includes a pre-travel test (72 hrs). In both cases there is no quarantine - no period of isolation. (Of course, you should read the fine print about what "fully vaccinated" means, what tests are acceptable for unvaccinated passengers, and what forms are required etc.)
https://jp.usembassy.gov/services/welcomebacktojapan/