1. Tracking the uptake of outcomes of hepatitis B virus testing using laboratory data in Victoria, 2011-16: a population-level cohort study.
- Author
-
van Gemert C, Dimech W, Stoove M, Guy R, Howell J, Bowden S, Nicholson S, Pendle S, Donovan B, and Hellard M
- Subjects
- Cohort Studies, Communicable Disease Control, Female, Hepatitis B diagnosis, Hepatitis B epidemiology, Hepatitis B immunology, Hepatitis B prevention & control, Hepatitis B Vaccines therapeutic use, Hepatitis B, Chronic epidemiology, Hepatitis B, Chronic immunology, Hepatitis B, Chronic prevention & control, Humans, Male, Practice Guidelines as Topic, Retrospective Studies, Sentinel Surveillance, Victoria epidemiology, Hepatitis B Antibodies immunology, Hepatitis B Core Antigens immunology, Hepatitis B Surface Antigens immunology, Hepatitis B, Chronic diagnosis, Serologic Tests trends
- Abstract
Background A priority area in the 2016 Victorian Hepatitis B Strategy is to increase diagnostic testing. This study describes hepatitis B testing and positivity trends in Victoria between 2011 and 2016 using data from a national laboratory sentinel surveillance system., Methods: Line-listed diagnostic and monitoring hepatitis B testing data among Victorian individuals were collated from six laboratories participating in the Australian Collaboration for Coordinated Enhanced Sentinel Surveillance (ACCESS) of sexually transmissible infections and blood-borne viruses. Diagnostic tests included hepatitis B surface antigen (HBsAg)-only tests and guideline-based hepatitis B tests (defined as a single test event for HBsAg, hepatitis B surface antibody and hepatitis B core antibody). Using available data, the outcomes of testing and/or infection were further classified. Measures reported include the total number of HBsAg and guideline-based tests conducted and the proportion positive, classified as either HBsAg positive or chronic hepatitis B infection., Results: The number of HBsAg tests decreased slightly each year between 2011 and 2016 (from 91043 in 2011 to 79664 in 2016; P < 0.001), whereas the number of guideline-based hepatitis B tests increased (from 8732 in 2011 to 16085 in 2016; P <0.001). The proportion of individuals classified as having chronic infection decreased from 25% in 2011 to 7% in 2016, whereas the proportion classified as susceptible and immune due to vaccination increased (from 29% to 39%, and from 27% to 34%, respectively; P < 0.001)., Conclusions: The study findings indicate an increased uptake of guideline-based hepatitis B testing. The ongoing collection of testing data can help monitor progress towards implementation of the Victorian Hepatitis B Strategy.
- Published
- 2019
- Full Text
- View/download PDF