Establishment of a surveillance system (utilising Midwifes Data Collection Systems) for monitoring the impact of hepatitis B vaccination on the population prevalence of chronic hepatitis B virus infection in Australia.

Objective: To examine how routine hepatitis B surface antigen (HBsAg) testing of antenatal women (as identified on the NT Midwifes Data Collection System) can be used to track the impact of hepatitis B (HBV) vaccination on the prevalence of chronic HBV infection in the Northern Territory (NT).

Methods: Women who gave birth between 01 July 2002 and 30 June 2004 were identified from the NT Midwives Data Collection System (MDCS). For each woman, the unique hospital record number (HRN) was linked to the information system of the NT Government pathology service to obtain the results of serological tests for hepatitis B.

The impact of a new universal infant and school-based adolescent hepatitis B vaccination program in Australia.

We compared the results of two national serosurveys in Australia to evaluate the impact of universal infant vaccination and school-based programs for adolescents. Immunity improved significantly overall, especially in 1-year-olds (40.0% versus 86%; p<0.