by Kate Ebbutt
Katie Callaghan (Sexual Health London), Chris Kellet (Preventx), Sara Day (Sexual Health London)
There is limited published data regarding Hepatitis B (HBV) and Hepatitis C (HCV) infections detected via STI e-services. Our regional e-service explored HBV/HCV infection rates amongst its service users (SUs).
The e-notes were reviewed of SUs with reactive HepBsAg and/or HepCAb screening results between 1.1.21-1.1.22. Only SUs that disclose risks for acquiring HBV/HCV are offered testing. Unless a previous known infection is disclosed, SUs with reactive results are referred to clinic for confirmatory testing (CT). Non-negative results are categorised according to a cut off index of reactivity (low reactive COI >1-9, reactive COI >10).
67718 HBV and 61064 HCV tests were performed: 98.4% (66668) and 99.7% (60896) tested negative; 776/67718(1.1%) and 152/61064(0.2%) were low reactive/reactive. The CT results for all reactive HBV and HCV results were: 277/776 (35.7%) and 45/152(29.6%) positive; 412/776(53.1%) and 95/152(62.5%) negative; 87/776(11.2%) and 12/152(7.9%) unknown. Table. 51/51 new HBV/HCV diagnoses transitioned to hepatitis outpatient services.
CT outcomes of low reactive and reactive HBV and HCV screening results
|All reactives (COI**>1)||%/776||Reactive (COI**>10)||%/302|
|Transitioned to clinic||35||100%||32|
|Transitioned to clinic||16||100%|
|* Previously undiagnosed ** Cut off index|
85% and 79% SUs with reactive (COI>10) HBV and HCV results were confirmed. Where CT outcomes are known 35/67115, (0.05%) and 16/61007, (0.03%) previously undiagnosed HBV and HCV infections were detected via e-services. These all transitioned to hepatitis services, demonstrating effective collaboration between the e-service and clinics.