Japan recently announced that if you have received three doses of an approved COVID vaccine, you are exempted from the previous requirement to get a negative PCR test within 72 hours of departure.
However, in many countries, children below 12 are not eligible to get a third/booster dose yet. Are there any exceptions for children?
I eyeballed the official changes to regulation (in convoluted Japanese bureaucratese) but was not able to find any: the changes when boiled down just says a test result (検査証明) is not required if you hold a certificate of finishing three doses (ワクチン３回目接種済みであることの証明書), implying that the old rules continue to apply if you don't.
ワクチン３回目接種済みであることの証明書を保持している場合は、出国前72時間以内の検査証明の提出を求めないこととする。