Schedule 3 Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: sch 3 rev (E) by Public Health (Aircraft) 2007 reg 27 sch 3 rev (W) by Public Health (Aircraft) 2007 reg 27 INTERNATIONAL CERTIFICATE OF VACCINATION OR REVACCINATION AGAINST SMALLPOX ← Schedule 2 Schedule 3 Schedule 4 →