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Introduction South Africa (SA) has the highest number of people living with HIV (PLWH) globally, and a significant burden of alcohol and other drug use (AOD). Although integrating AOD treatment into HIV care may improve antiretroviral therapy (ART) adherence, this is not typically routine practice in SA or other low‐resource settings. Identifying interventions that are feasible and acceptable for implementation is critical to improve HIV and AOD outcomes. Methods A pilot randomized hybrid type 1 effectiveness‐implementation trial (N = 61) was conducted to evaluate the feasibility and acceptability of Khanya, a task‐shared, peer‐delivered behavioral intervention to improve ART adherence and reduce AOD in HIV care in SA. Khanya was compared to enhanced treatment as usual (ETAU), a facilitated referral to on‐site AOD treatment. Implementation outcomes, defined by Proctor’s model, included feasibility, acceptability, appropriateness and fidelity. Primary pilot effectiveness outcomes were ART adherence at post‐treatment (three months) measured via real‐time electronic adherence monitoring, and AOD measured using biomarker and self‐report assessments over six months. Data collection was conducted from August 2018 to April 2020. Results and discussion Ninety‐one percent of participants (n = 56) were retained at six months. The intervention was highly feasible, acceptable, appropriate and delivered with fidelity (>90% of components delivered as intended by the peer). There was a significant treatment‐by‐time interaction for ART adherence (estimate = −0.287 [95% CI = −0.507, −0.066]), revealing a 6.4 percentage point increase in ART adherence in Khanya, and a 22.3 percentage point decline in ETAU. Both groups evidenced significant reductions in alcohol use measured using phosphatidylethanol (PEth) (F(2,101) = 4.16, p = 0.01), significantly decreased likelihood of self‐reported moderate or severe AOD (F(2,104) = 7.02, p = 0.001), and significant declines in alcohol use quantity on the timeline follow‐back (F(2,102) = 21.53, p < 0.001). Among individuals using drugs and alcohol, there was a greater reduction in alcohol use quantity in Khanya compared to ETAU over six months (F(2,31) = 3.28, p = 0.05). Conclusions Results of this pilot trial provide initial evidence of the feasibility and acceptability of the Khanya intervention for improving adherence in an underserved group at high risk for ongoing ART non‐adherence and HIV transmission. Implementation results suggest that peers may be a potential strategy to extend task‐sharing models for behavioral health in resource‐limited, global settings.

Background: Substance use is prevalent in South Africa and associated with poor HIV treatment outcomes, yet, it is largely unaddressed in HIV care. Implementing an evidence-based, task-shared intervention for antiretroviral therapy (ART) adherence and substance use integrated into HIV care may be a feasible and effective way to improve HIV treatment outcomes and reduce substance use in this population.Methods: Guided by the RE-AIM framework, a randomized, hybrid type 1 effectiveness-implementation trial (n = 60) is being used to evaluate a peer-delivered intervention that integrates evidence-based intervention components, including Life-Steps (problem solving and motivational skills for HIV medication adherence), behavioral activation to increase alternative, substance-free rewarding activities in one's environment, and relapse prevention skills, including mindfulness. The comparison condition is enhanced standard of care, which includes facilitating a referral to a local substance use treatment clinic (Matrix). Participants are followed for a period of 6 months. Implementation outcomes are defined by Proctor's model for implementation and include mixed methods evaluations of feasibility, acceptability, and fidelity, and barriers and facilitators to implementation. Primary patientlevel effectiveness outcomes are ART adherence (Wisepill) and substance use (WHO-ASSIST and urinalysis); viral load is an exploratory outcome.Discussion: Results of this trial will provide important evidence as to whether peer delivery of an integrated intervention for ART adherence and substance use is feasible, acceptable, and effective. Implementation outcomes will provide important insight into using peers as an implementation strategy to extend task sharing models for behavioral health in resource-limited settings globally.

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The current opioid crisis in the United States has been considered an "epidemic of poor access to care." Similar to the shortage of trained providers to prescribe medications to treat opioid use disorder (OUD), there is a severe shortage of trained providers to meet the mental health needs of patients with OUD. These workforce shortages are evident nationwide, yet are particularly salient in rural areas. In this commentary in response to the article "Integrating Addiction Medicine into Rural Primary Care: Strategies and Initial Outcomes (Logan et al., 2019)," we propose that we can apply lessons learned from working in resourceconstrained settings globally to improve access to mental health care for patients with OUD in rural areas in the United States. We expand upon Logan et al. ( 2019) by discussing how non-specialist health workers, including community health workers and peer providers, under the supervision of psychologists and other specialists, can expand access to evidence-based mental health care for patients with OUD, particularly those receiving medications for opioid use disorder (MOUD). We draw from established models in global mental health that rely on "task sharing" mental health care to discuss ways in which lessons learned from scaling up evidence-based interventions with lay health workers in low and middle-income countries can directly inform efforts to increase access to mental health care to address the opioid crisis. What is the public health significance of this article?The opioid crisis is considered an epidemic of poor access to care, which includes poor access to medication for opioid use disorder and treatment for mental health comorbidities. Lessons learned from lay health worker interventions in low-resource international settings could help expand access to OUD treatment and mental health treatment locally.