A vaccination record helps identify previous doses and upcoming appointments. If a dose was missed, WHO recommends discussing catch-up with a healthcare worker rather than waiting for an outbreak. Vaccination prepares an immune response before disease exposure, and protection may require completing recommended doses. A disease becoming uncommon does not mean its cause has disappeared, or that every available vaccine is needed by everyone. Review local schedules, age, travel and health conditions with a professional. Mention immune-affecting treatments and severe allergies: suitability depends on the particular vaccine and individual circumstances, not an online checklist alone.