4 ms·I've never heard of a yellow booklet.by jayess 7y agoI've never heard of a yellow booklet.0b0001 7y agoIt's the WHO document that keeps track of your vaccinations. https://en.m.wikipedia.org/wiki/Carte_Jaune https://en.m.wikipedia.org/wiki/Carte_Jaunekaybe 7y agoHow do you track your vaccinations?