I received my 4 vaccination boosters while in Singapore and have a certificate to confirm this but it will expire in one year.
Now I live in Japan since January of this year, how can I transfer the vaccination certificate to Japan before my Singapore certificate expires?
This is for when I travel to the US for example and need to prove I am vaccinated.
From my research it seems Japan will not provide a vaccination certificate for people that received vaccinations overseas but if so, that would leave me in a situation where I could no longer prove my vaccination.
Asking around I have come up empty but this must be a fairly common situation, has anybody figured out a solution to this situation?