Background: Hepatitis B virus (HBV) is highly endemic in many of the Pacific Island countries. Four island countries-Cook Islands, Kiribati, Niue, and Tokelau-sought to evaluate the success of their hepatitis B vaccination programs by conducting nationally representative serosurveys among children born post-vaccine introduction.
Methods: Cook Islands, Niue, and Tokelau conducted school-based census serosurveys because of small populations.