Integrating enhanced hepatitis C testing and counselling in research

Engaging people who inject drugs in hepatitis C virus testing and prevention through community-based outreach, in Sydney, Australia

INTRODUCTION AND AIMS

Increasing treatment uptake among people who inject drugs (PWID) with chronic hepatitis C virus (HCV) infection is integral to eliminating viral hepatitis. This study explored the role of community-based outreach in engaging and retaining Australian PWID in the testing component of the HCV care cascade.

DESIGN AND METHODS

Semi-structured interviews were conducted with 28 PWID, including new initiates to injecting and those from culturally and linguistically diverse (CALD) backgrounds, who acquired HCV infection while enrolled in a community-based prospective observational study of hepatitis C vaccine preparedness in Sydney. Participants were interviewed at diagnosis and 12 months later. Transcripts were thematically analysed using constant comparative techniques.

RESULTS

Community-based outreach was effective in engaging newly infected participants in HCV monitoring and decision-making about seeking interferon-based treatment. Key factors in the acceptability of outreach were privacy and discretion, and opportunities to build trust with non-judgmental staff. Retaining participants in the HCV cascade of care required more than a one-off session of post-test counselling. Ongoing discussions with staff enabled paced and tailored delivery of information about HCV prevention, testing and treatment. Increased understanding of the role of HCV ribonucleic acid viremia in determining the need for treatment, and access to this testing, was pivotal in making HCV monitoring salient for participants.

DISCUSSION AND CONCLUSIONS

Outreach is an effective strategy for engaging new initiates to injecting and CALD PWID in HCV testing and decision-making about treatment. Findings highlight the need to increase availability and access to HCV ribonucleic acid testing for PWID.

Does informing people who inject drugs of their hepatitis C status influence their injecting behaviour? Analysis of the Networks II study

BACKGROUND

People who inject drugs (PWID) are at risk of hepatitis C virus (HCV). It is plausible that PWID who receive a diagnosis of HCV will reduce their injecting risk out of concern for their injecting partners, although evidence for this is currently limited. The aim of this study was to investigate whether informing PWID of their HCV diagnosis was associated with a change in injecting behaviour.

METHODS

Prospective, longitudinal study of PWID recruited from street drug markets across Melbourne, Australia. Interviews and HCV testing were conducted at 3-monthly intervals. The association between receiving a diagnosis of HCV and (i) injecting frequency and (ii) injecting equipment borrowing, was examined using generalized estimating equations (GEE) analysis.

RESULTS

Thirty-five individuals received a diagnosis of HCV during the study period. Receiving a diagnosis of HCV was associated with a decrease of 0.35 injections per month (p=0.046) but there was no change in injecting equipment borrowing (p=0.750).

CONCLUSIONS

A small reduction in injecting frequency was observed in PWID who received a diagnosis of HCV. This finding should be investigated further in larger studies examining a wider range of injecting risk behaviours.

Using ethnographic fieldwork to inform hepatitis C vaccine preparedness studies with people who inject drugs

BACKGROUND

Feasibility studies are an important component of preparations for field trials of biomedical prevention interventions, including vaccines.

METHODS

We conducted ethnographic fieldwork to assess feasibility, including eligibility and willingness to participate, prior to recruitment of a prospective observational study of hepatitis C negative people who inject drugs (PWID) in Sydney, Australia. Five staff conducted ethnographic fieldwork in 16 locations during 2008. Observations and interactions with PWID were recorded as field notes and data were used iteratively to guide targeting of locations and the follow-up of networks and individuals.

RESULTS

Findings informed the development of the study protocol, resulting in changes in the amount and type of participant reimbursement and the quantity of blood collected at screening, as well as highlighting the need for increased emphasis on communicating eligibility and exclusion criteria and study remuneration procedures.

CONCLUSION

Results illustrate the value of ethnographic research in facilitating consultation and discussion with potential participants in natural settings, identifying motivations and concerns prior to study commencement and providing affected community input into the development of research protocols.