Also known as International Certificate of Vaccination or Prophylaxis,
The Carte Jaune or Yellow Card is an international certificate of vaccination (ICV). It is issued by the World Health Organization. It is recognised internationally and may be required for entry to certain countries where there are increased health risks for travellers. The Yellow Card should be kept in the holder's passport, as it is a medical passport of sorts.
I have a Yellow Card with ~7 vaccinations, including one for Yellow Fever. When I was getting vaccinated, the doctor only signed and stamped vaccinations in the card, I'm not sure if they registered it anywhere.
If I ever lose it, is there any way to request a copy from any global organization (like WHO)? Or would I have to do it in the same hospital that I was vaccinated? I don't think I can just use a (notarized) copy if I ever need it entering another country, but I may be wrong.