Drug injecting and other risk behaviours among potential clients of the mobile drug consumption room in Brno, Czechia.

Background: Injecting drug use is associated with a high disease burden, particularly due to the high risk of blood-borne infections such as viral hepatitis C (HCV) and human immunodeficiency virus (HIV) infection. Interventions recommended for the prevention and control of infections associated with drug use include so-called drug consumption rooms (DCRs). A DCR is a professional addiction service where people who use drugs (PWUD) can consume the drug they bring under safer and hygienic conditions. In September 2023, the first DCR in the Czech Republic was opened in Brno as a mobile setting (MDCR) in a socially excluded location (SEL) with a high prevalence of heroin and other opioids injecting, especially in the local Roma community. Its launch involved mixed methods research aimed at needs analysis and service set-up. This paper presents an analysis of quantitative data focusing on risk behaviours and other characteristics of potential clients of the programme.

Material and methods: Two cross-sectional questionnaire surveys (n=131 and n=135) were conducted just before and after the launch of the programme among PWUD recruited through convenience sampling by collaborating services and peer workers in Brno. The analysis addressed the characteristics of clients in the SEL where the MDCR operates. Pairwise associations between the SEL affiliation and other variables were analysed using the chi-square test and t-test. For statistically significant predictors from the pairwise analysis, logistic regression analysis was performed, with adjustment for gender and age. Results are presented as adjusted odds ratios (AOR).

Results: In both surveys, two thirds were male, mean age around 37 years (36.5 years in survey 1 and 37.5 years in survey 2). Most of them were people who injected drugs with a relatively high rate of risk behaviours. In survey 2, more people self-reported Roma ethnicity (50.7% versus 20.3%) and opioids as their primary drug (39.7% versus 27.5%). Respondents from survey 1 living in the SEL were more likely to have used heroin (AOR=8.2) and opioids (4.7) in the past year, to have injected drugs in an indoor public space in the past 30 days (3.6), to have witnessed an overdose (2.5), and to have been taken by emergency services (2.6) in the past 12 months. SEL respondents were more likely to have been clients of addiction services in the past year (2.8), especially opioid agonist treatment (4.6), but on the other hand, showed significantly more barriers to treatment. The survey after the MDCR launch confirmed higher rates of opioid use (2.9) and lower rates of methamphetamine use (0.3) and showed a higher prevalence of ever-diagnosed HCV (3.0) among SEL respondents. Prior to the opening of the MDCR, SEL respondents were in general less aware of the DCR (0.4) but reported greater willingness to use it after its launch (2.7).

Conclusion: The launch of the mobile DCR in Brno was justified due to the high prevalence of injecting drug use and the presence of associated risks, including injecting in public. The location of the DCR is appropriate as PWUDs in the SEL where it operates exhibit higher levels of risk behaviour and vulnerability. At the same time, they show a higher willingness to use the DCR. The set-up of DCR in Brno and its impacts on the health and social situation of clients and the community should be further monitored.