An evaluation of first responders' intention to refer to post-overdose services following SHIELD training.

BACKGROUND: First responders [law enforcement officers (LEO) and Fire/Emergency Medical Services (EMS)] can play a vital prevention role, connecting overdose survivors to treatment and recovery services. This study was conducted to examine the effect of occupational safety and harm reduction training on first responders' intention to refer overdose survivors to treatment, syringe service, naloxone distribution, social support, and care-coordination services, and whether those intentions differed by first responder profession. METHODS: First responders in Missouri were trained using the Safety and Health Integration in the Enforcement of Laws on Drugs (SHIELD) model. Trainees' intent to refer (ITR) overdose survivors to prevention and supportive services was assessed pre- and post-training (1-5 scale). A mixed model analysis was conducted to assess change in mean ITR scores between pre- and post-training, and between profession type, while adjusting for random effects between individual trainees and baseline characteristics. RESULTS: Between December 2020 and January 2023, 742 first responders completed pre- and post-training surveys. SHIELD training was associated with higher first responders' intentions to refer, with ITR to naloxone distribution (1.83-3.88) and syringe exchange (1.73-3.69) demonstrating the greatest changes, and drug treatment (2.94-3.95) having the least change. There was a significant increase in ITR score from pre- to post-test (ß = 2.15; 95% CI 1.99, 2.30), and LEO-relative to Fire/EMS-had a higher score at pre-test (0.509; 95% CI 0.367, 0.651) but a lower score at post-test (0.148; 95% CI - 0.004, 0.300). CONCLUSION: Training bundling occupational safety with harm reduction content is immediately effective at increasing first responders' intention to connect overdose survivors to community substance use services. When provided with the rationale and instruction to execute referrals, first responders are amenable, and their positive response highlights the opportunity for growth in increasing referral partnerships and collaborations. Further research is necessary to assess the extent to which ITR translates to referral behavior in the field.

Popular media misinformation on neonatal abstinence syndrome, 2015-2021.

BACKGROUND: As the overdose crisis unfolded, narratives mischaracterizing neonatal abstinence syndrome (NAS) as "addicted babies" with echoes to the "crack babies" panic proliferated in mainstream media. his study examines NAS misinformation dynamics and characteristics over a seven-year period. METHODS: Based on a comprehensive query, Media Cloud was used to compile mainstream media content relating to NAS between 2015 and 2021. Articles were redundantly coded on key parameters such as speakers represented, publication source, and scientific accuracy. RESULTS: Of the 348 articles meeting search criteria, 264 (76 %) featured misinformed narratives, 70 (20 %) featured informed narratives, and 14 (4 %) featured both informed and misinformed content. Most frequent misinformation elements related to misrepresentation of babies as "addicted" at birth and exaggeration of NAS symptomatology and long-term harms. Least represented voices were people most affected, with just 11 (2 %) featuring mothers who used opioids prepartum. DISCUSSION: Since misinformation contributes to punitive legal responses and harms patient care, efforts to prevent, monitor, and address inaccurate and stigmatizing narratives are essential to improving policy and practice.

Cost-effectiveness of a police education program on HIV and overdose among people who inject drugs in Tijuana, Mexico.

Background: Incarceration is associated with drug-related harms among people who inject drugs (PWID). We trained >1800 police officers in Tijuana, Mexico on occupational safety and HIV/HCV, harm reduction, and decriminalization reforms (Proyecto Escudo). We evaluated its effect on incarceration, population impact and cost-effectiveness on HIV and fatal overdose among PWID. Methods: We assessed self-reported recent incarceration in a longitudinal cohort of PWID before and after Escudo. Segmented regression was used to compare linear trends in log risk of incarceration among PWID pre-Escudo (2012-2015) and post-Escudo (2016-2018). We estimated population impact using a dynamic model of HIV transmission and fatal overdose among PWID, with incarceration associated with syringe sharing and fatal overdose. The model was calibrated to HIV and incarceration patterns in Tijuana. We compared a scenario with Escudo (observed incarceration declines for 2 years post-Escudo among PWID from the segmented regression) compared to a counterfactual of no Escudo (continuation of stable pre-Escudo trends), assessing cost-effectiveness from a societal perspective. Using a 2-year intervention effect and 50-year time horizon, we determined the incremental cost-effectiveness ratio (ICER, in 2022 USD per disability-adjusted life years [DALYs] averted). Findings: Compared to stable incarceration pre-Escudo, for every three-month interval in the post-Escudo period, recent incarceration among PWID declined by 21% (adjusted relative risk = 0.79, 95% CI: 0.68-0.91). Based on these declines, we estimated 1.7% [95% interval: 0.7%-3.5%] of new HIV cases and 12.2% [4.5%-26.6%] of fatal overdoses among PWID were averted in the 2 years post-Escudo, compared to a counterfactual without Escudo. Escudo was cost-effective (ICER USD 3746/DALY averted compared to a willingness-to-pay threshold of $4842-$13,557). Interpretation: Escudo is a cost-effective structural intervention that aligned policing practices and human-rights-based public health practices, which could serve as a model for other settings where policing constitutes structural HIV and overdose risk among PWID. Funding: National Institute on Drug Abuse, UC MEXUS CONACyT, and the San Diego Center for AIDS Research (SD CFAR).

Privacy and confidentiality in Massachusetts' post-overdose outreach programs: Mixed methods analysis of outreach staff surveys and interviews.

BACKGROUND: Public health-public safety partnerships for post-overdose outreach have emerged in many communities to prevent future overdose events. These efforts often identify overdose survivors through emergency call data and seek to link them with relevant services. The aim of this study was to describe how post-overdose outreach programs in Massachusetts manage the confidentiality of identifiable information and privacy of survivors. METHODS: In 2019, 138 Massachusetts programs completed surveys eliciting responses to questions about program operations. Descriptive statistics were calculated from the closed-ended survey responses. Thirty-eight interviews were conducted among outreach staff members during 2019-2020. Interview transcripts and open-ended survey responses were thematically analyzed using deductive and inductive approaches. RESULTS: Of programs that completed the survey, 90 % (n = 124/138) reported acting to protect the privacy of survivors following overdose events, and 84 % (n = 114/135) reported implementing a protocol to maintain the confidentiality of personal information. Interviews with outreach team members indicated substantial variation in practice. Outreach programs regularly employed discretion in determining actions in the field, sometimes undermining survivor privacy and confidentiality (e.g., by disclosing the overdose event to family members). Programs aiming to prioritize privacy and confidentiality attempted to make initial contact with survivors by phone, limited or concealed materials left behind when no one was home, and/or limited the number of contact attempts. CONCLUSIONS: Despite the establishment of privacy and confidentiality protocols within most post-overdose outreach programs, application of these procedures was varied, discretionary, and at times viewed by staff as competing with engagement efforts. Individual outreach overdose teams should prioritize privacy and confidentiality during outreach to protect overdose survivors from undesired exposure. In addition to individual program changes, access to overdose survivor information could be changed across all programs to bolster privacy and confidentiality protocols. For example, transitioning the management of overdose-related information to non-law enforcement agencies would limit officers' ability to disseminate such information at their discretion.

Association of Medicaid expansion with health insurance, unmet need for medical care and substance use disorder treatment among people who inject drugs in 13 US states.

BACKGROUND AND AIMS: Impoverished people who inject drugs (PWID) are at the epicenter of US drug-related epidemics. Medicaid expansion is designed to reduce cost-related barriers to care by expanding Medicaid coverage to all US adults living at or below 138% of the federal poverty line. This study aimed to measure whether Medicaid expansion is (1) positively associated with the probability that participants are currently insured; (2) inversely related to the probability of reporting unmet need for medical care due to cost in the past year; and (3) positively associated with the probability that they report receiving substance use disorder (SUD) treatment in the past year, among PWID subsisting at ≤ 138% of the federal poverty line. DESIGN: A two-way fixed-effects model was used to analyze serial cross-sectional observational data. SETTING: Seventeen metro areas in 13 US states took part in the study. PARTICIPANTS: Participants were PWID who took part in any of the three waves (2012, 2015, 2018) of data gathered in the Center for Disease Control and Prevention's National HIV Behavioral Surveillance (NHBS), were aged ≤ 64 years and had incomes ≤ 138% of the federal poverty line. For SUD treatment analyses, the sample was further limited to PWID who used drugs daily, a proxy for SUD. MEASUREMENTS: State-level Medicaid expansion was measured using Kaiser Family Foundation data. Individual-level self-report measures were drawn from the NHBS surveys (e.g. health insurance coverage, unmet need for medical care because of its cost, SUD treatment program participation). FINDINGS: The sample for the insurance and unmet need analyses consisted of 19 946 impoverished PWID across 13 US states and 3 years. Approximately two-thirds were unhoused in the past year; 41.6% reported annual household incomes < $5000. In multivariable models, expansion was associated with a 19.0 [95% confidence interval (CI) = 9.0, 30.0] percentage-point increase in the probability of insurance coverage, and a 9.0 (95% CI = -15.0, -0.2) percentage-point reduction in the probability of unmet need. Expansion was unrelated to SUD treatment among PWID who used daily (n = 17 584). CONCLUSIONS: US Medicaid expansion may curb drug-related epidemics among impoverished people who inject drugs by increasing health insurance coverage and reducing unmet need for care. Persisting non-financial barriers may undermine expansion's impact upon substance use disorder treatment in this sample.

Missed Opportunities: Substance Use Hotline Operator Uncertainty of State Buprenorphine Prescribing via Telemedicine.

OBJECTIVES: We examined substance use hotline operator certainty of each US state and Washington, DC's endorsement of buprenorphine (initiation and continuation) prescribing via telemedicine. METHODS: Between March and May 2021, we called hotlines in 50 US states and Washington, DC, requesting information on whether practitioners in that state could initiate or continue buprenorphine treatment for opioid use disorder (OUD) via telephone or video conference. We compared operator responses to state implementation of buprenorphine telemedicine initiation. This study was designated as not human subjects research by the Boston University Institutional Review Board. RESULTS: We spoke with operators in 47 states and Washington, DC. Operators could not be reached in Alaska, California, and Montana. Most operators were uncertain (don't know, probably yes, probably no) whether the state permitted buprenorphine initiation (81%, n = 39) or continuation (83%, n = 40) via telemedicine. Practitioners could initiate buprenorphine prescribing via telemedicine in 7 states (100%) where operators were certain practitioners could initiate buprenorphine, 1 state (100%) where the operator was certain practitioners could not, and 6 states (86%) where operators indicated practitioners probably could not. CONCLUSIONS: Most US states and Washington, DC, expanded the role of telemedicine in OUD treatment. However, most operators expressed uncertainty and sometimes communicated inaccurate information regarding whether practitioners could initiate buprenorphine treatment via telemedicine. There is an urgent need for policy mandates institutionalizing the role of telemedicine, and of buprenorphine specifically, in OUD treatment and for resources to train and support substance use hotline operators in this evolving policy environment.

The Other Infodemic: Media Misinformation about Involuntary Commitment for Substance Use.

BACKGROUND: As drug-related deaths have surged, the number and scope of legal mechanisms authorizing involuntary commitment for substance use have expanded. Media coverage of involuntary commitment routinely ignores documented health and ethical concerns. Prevalence and dynamics of misinformation about involuntary commitment for substance use have not been assessed. METHODS: Media content mentioning involuntary commitment for substance use published between January 2015 and October 2020 was aggregated using MediaCloud. Articles were redundantly coded for viewpoints presented, substances mentioned, discussion of incarceration, and mentions of specific drugs. In addition, we tracked Facebook shares of coded content. RESULTS: Nearly half (48%) of articles unequivocally endorsed involuntary commitment, 30% presented a mixed viewpoint, and 22% endorsed a health-based or rights-based critique. Only 7% of articles included perspectives of people with lived experience of involuntary commitment. Critical articles received nearly twice as many Facebook shares (199,909 shares) as supportive and mixed narratives combined (112,429 shares combined). DISCUSSION: Empirical and ethical concerns about involuntary commitment for substance use are largely absent from coverage in mainstream media, as are voices of those with lived experience. Better alignment between news coverage and science is vital to inform effective policy responses to emerging public health challenges.

Modeling as Visioning: Exploring the Impact of Criminal Justice Reform on Health of Populations with Substance Use Disorders.

In the context of historic reckoning with the role of the criminal-legal system as a structural driver of health harms, there is mounting evidence that punitive drug policies have failed to prevent problematic drug use while fueling societal harms. In this explainer article, we discuss how simulation modeling provides a methodological framework to explore the potential outcomes (beneficial and harmful) of various drug policy alternatives, from incremental to radical. We discuss potential simulation modeling opportunities while calling for a more active role of simulation modeling in visioning and operationalizing transformative change. Highlights: This article discusses opportunities for simulation modeling in projecting health and economic impacts (beneficial and harmful) of drug-related criminal justice reforms.We call on modelers to explore radical interventions to reduce drug-related harm and model grand alternative futures in addition to more probable scenarios, with a goal of opening up policy discourse to these options.

Unlocking deflection: The role of supervisor support in police officer willingness to refer people who inject drugs to harm reduction services.

BACKGROUND: Research is needed that investigates the relationship between police behaviors, attitudes, and perceived supervisor support as an implementation strategy of improving drug policy reforms. METHODS: We hypothesized that officers with more positive attitudes and practices would be more likely to report the perceived support of their supervisors. Data includes a sample of 1227 police officers who completed Project ESCUDO, a police education training program in Tijuana, Mexico. A negative binomial distribution was used to estimate associations between police behaviors and attitudes and perceived supervisor support. RESULTS: Officers who reported perceived supervisor support accounted for 29.2% (n=470) of the sample. Officers who referred people to social services were more likely and officers who broke syringes were less likely to report perceived supervisor support compared to officers who did not engage in these practices. Officers who believed: MOUD reduced criminal activity, "referring people who use drugs to social services is part of my job", and "laws that treat addiction as a public health problem make my job easier", were more likely to report perceived supervisor support. Beliefs that drug addiction is a disease, laws that treat addiction as a public health problem make their job easier, and talking to other law enforcement officers about infectious diseases were not significantly associated with perceived supervisor support. CONCLUSIONS: Our research highlights the importance of incorporating police supervisors as key actors in assuring officers' practices reflect current drug law reforms as well as embrace patient-centered approaches to managing encounters people who use opioids and inject drugs.

Characteristics of post-overdose outreach programs and municipal-level opioid overdose in Massachusetts.

BACKGROUND: Post-overdose outreach programs have proliferated in response to opioid overdose. Implementing these programs is associated with reductions in overdose rates, but the role of specific program characteristics in overdose trends has not been evaluated. METHODS: Among 58 Massachusetts municipalities with post-overdose outreach programs, we examined associations between five domains of post-overdose outreach program characteristics (outreach contact rate, naloxone distribution, coercive practices, harm reduction activities, and social service provision or referral) and rates of fatal opioid overdoses and opioid-related emergency medical system responses (i.e., ambulance activations) per calendar quarter from 2013 to 2019 using segmented regression analyses with adjustment for municipal covariates and fixed effects. For both outcomes, each domain was modeled: a) individually, b) with other characteristics, and c) with other characteristics and municipal-level fixed effects. RESULTS: There were no significant associations (p < 0.05) between outreach contact rate, naloxone distribution, coercive practices, or harm reduction activities with municipal fatal overdose trends. Municipalities with programs providing or referring to more social services experienced 21% fewer fatal overdoses compared to programs providing or referring to more social services (Rate Ratio (RR) 0.79, 95% Confidence Interval (CI) 0.66-0.93, p = 0.01). Compared to municipalities in quarters when programs had no outreach contacts, municipalities with some, but less than the median outreach contacts, experienced 14% lower opioid-related emergency responses (RR 0.86, 95% CI 0.78-0.96, p = 0.01). Associations between naloxone distribution, coercive practices, harm reduction practices, or social services and opioid-related emergency responses were not consistently significant across modeling approaches. CONCLUSION: Municipalities with post-overdose outreach programs providing or referring to more social services had lower fatal opioid overdose rates. Municipalities in quarters when programs outreached to overdose survivors had fewer opioid-related emergency responses, but only among programs with below the median number of outreach contacts. Social service linkage should be core to post-overdose programs. Evaluations should assess program characteristics to optimize program design.

The police paradox: A qualitative study of post-overdose outreach program implementation through public health-public safety partnerships in Massachusetts.

BACKGROUND: Post-overdose outreach has emerged in the United States as an increasingly common response to non-fatal overdose. This qualitative study investigates the implementation of such programs through public health-public safety partnerships in Massachusetts. METHODS: We conducted semi-structured interviews with post-overdose outreach team members, overdose survivors, and family members who received outreach. Interview transcripts were inductively analyzed to identify emergent themes and subsequently organized within the framework of Ecological Systems Theory. RESULTS: Forty-nine interviews were conducted, including 15 police officers (80% male, 100% non-Hispanic White); 23 public health partners (48% male, 87% non-Hispanic White); 8 overdose survivors who received outreach services and 3 parents of survivors who received services (collectively 27% male, 64% non-Hispanic White). Implementation factors identified across all levels (macrosystem, exosystem, mesosystem, and microsystem) of Ecological Systems Theory included key program facilitators, such as access to police data and funding (macro), interagency collaboration (exo), shared recognition of community needs (exo), supportive relationships among team members (meso), and program champions (micro). Common barriers included inherent contradictions between policing and public health mandates (macro), poor local treatment and service capacity (exo), divergent staff views of program goals (exo), overdose survivors' prior negative experiences with law enforcement (meso), difficulty locating overdose survivors (meso), and police officers' lack of qualifications or training in providing psycho-social services (micro). CONCLUSIONS: Most post-overdose outreach programs in this study were dependent on funding and data-sharing partnerships, which police agencies largely controlled. Yet, police participation, especially during outreach visits presented numerous challenges for engaging overdose survivors and establishing non-coercive linkages with evidence-based services, which may undermine the public health goals of these programs. These findings should inform state and federal efforts to expand the role of law enforcement in behavioral health initiatives.

Moving Naloxone Over the Counter Is Necessary but Not Sufficient.

Naloxone is an opioid antagonist that is available in numerous formulations and can be easily administered to avert death from opioid overdose. Amid a historic overdose crisis in the United States, naloxone has a crucial role in stemming the loss of life. However, it remains largely inaccessible to the public. Recently, the U.S. Food and Drug Administration announced the approval of the first over-the-counter formulation of naloxone. Although this historic change provides an important opportunity to increase distribution of naloxone, we must take careful steps during this transition so that it does not paradoxically threaten overall access to this life-saving medication. Specifically, we must ensure that a larger supply of naloxone will meet the newly increased demand at a sustainable price for consumers who are most in need. We must also continue to prioritize comprehensive methods of distribution, such as overdose education and naloxone distribution programs, that serve as important tools to reach the most vulnerable populations. In addition, simultaneous investment in harm-reduction strategies, such as supervised consumption spaces, is critical to ensure that naloxone is available in settings where its life-saving potential can be most fully realized.

Estimating the impact of a police education program on hepatitis C virus transmission and disease burden among people who inject drugs in Tijuana, Mexico: A dynamic modeling analysis.

BACKGROUND AND AIMS: Criminalization of drug use and punitive policing are key structural drivers of hepatitis C virus (HCV) risk among people who inject drugs (PWID). A police education program (Proyecto Escudo) delivering training on occupational safety together with drug law content was implemented between 2015 and 2016 in Tijuana, Mexico, to underpin drug law reform implementation. We used data from a longitudinal cohort of PWID in Tijuana to inform epidemic modeling and assess the long-term impact of Escudo on HCV transmission and burden among PWID in Tijuana. METHODS: We developed a dynamic, compartmental model of HCV transmission and incarceration among PWID and tracked liver disease progression among current and former PWID. The model was calibrated to data from Tijuana, Mexico, with 90% HCV seroprevalence. We used segmented regression analysis to estimate impact of Escudo on recent incarceration among an observational cohort of PWID. By simulating the observed incarceration trends, we estimated the potential impact of the implemented (2-year reduction in incarceration) and an extended (10-year reduction in incarceration) police education program over a 50-year follow-up (2016-2066) on HCV outcomes (incidence, cirrhosis, HCV-related deaths and disability adjusted life-years averted) compared with no intervention. RESULTS: Over the 2-year follow-up, Proyecto Escudo reduced HCV incidence among PWID from 21.5 per 100 person years (/100py) (95% uncertainty interval [UI] = 15.3-29.7/100py) in 2016 to 21.1/100py (UI = 15.0-29.1/100py) in 2018. If continued for 10 years, Escudo could reduce HCV incidence to 20.0/100py (14.0-27.8/100py) by 2026 and avert 186 (32-389) new infections, 76 (UI = 12-160) cases of cirrhosis and 32 (5-73) deaths per 10 000 PWID compared with no intervention over a 50-year time horizon. CONCLUSIONS: In Tijuana, Mexico, implementation of a police education program delivering training on occupational safety and drug law content appears to have reduced hepatitis C virus incidence among people who inject drugs.

Association of Implementation of Postoverdose Outreach Programs With Subsequent Opioid Overdose Deaths Among Massachusetts Municipalities.

Importance: Nonfatal opioid overdose is the leading risk factor for subsequent fatal overdose and represents a critical opportunity to reduce future overdose and mortality. Postoverdose outreach programs emerged in Massachusetts beginning in 2013 with the main purpose of linking opioid overdose survivors to addiction treatment and harm reduction services. Objective: To evaluate whether the implementation of postoverdose outreach programs among Massachusetts municipalities was associated with lower opioid fatality rates compared with municipalities without postoverdose outreach programs. Design, Setting, and Participants: This retrospective interrupted time-series analysis was performed over 26 quarters (from January 1, 2013, through June 30, 2019) across 93 municipalities in Massachusetts. These 93 municipalities were selected based on a threshold of 30 or more opioid-related emergency medical services (EMS) responses in 2015. Data were analyzed from November 2021 to August 2022. Exposures: The main exposure was municipality postoverdose outreach programs. Municipalities had various program inceptions during the study period. Main Outcomes and Measures: The primary outcome was quarterly municipal opioid fatality rate per 100 000 population. The secondary outcome was quarterly municipal opioid-related EMS response (ambulance trips) rates per 100 000 population. Results: The mean (SD) population size across 93 municipalities was 47 622 (70 307), the mean (SD) proportion of female individuals was 51.5% (1.5%) and male individuals was 48.5% (1.5%), and the mean (SD) age proportions were 29.7% (4.0%) younger than 25 years, 26.0% (4.8%) aged 25 to 44 years, 14.8% (2.1%) aged 45 to 54 years, 13.4% (2.1%) aged 55 to 64 years, and 16.1% (4.4%) aged 65 years or older. Postoverdose programs were implemented in 58 municipalities (62%). Following implementation, there were no significant level changes in opioid fatality rate (adjusted rate ratio [aRR], 1.07; 95% CI, 0.96-1.19; P = .20). However, there was a significant slope decrease in opioid fatality rate (annualized aRR, 0.94; 95% CI, 0.90-0.98; P = .003) compared with the municipalities without the outreach programs. Similarly, there was a significant slope decrease in opioid-related EMS response rates (annualized aRR, 0.93; 95% CI, 0.89-0.98; P = .007). Several sensitivity analyses yielded similar findings. Conclusions and Relevance: In this study, among Massachusetts municipalities with high numbers of opioid-related EMS responses, implementation of postoverdose outreach programs was significantly associated with lower opioid fatality rates over time compared with municipalities that did not implement such programs. Program components, including cross-sectoral partnerships, operational best practices, involvement of law enforcement, and related program costs, warrant further evaluation to enhance effectiveness.

Prioritization of carceral spending in U.S. cities: Development of the Carceral Resource Index (CRI) and the role of race and income inequality.

BACKGROUND: Policing, corrections, and other carceral institutions are under scrutiny for driving health harms, while receiving disproportionate resources at the expense of prevention and other services. Amidst renewed interest in structural determinants of health, roles of race and class in shaping government investment priorities are poorly understood. METHODS: Based on the Social Conflict Model, we assessed relationships between city racial/ economic profiles measured by the Index of Concentration at the Extremes (ICE) and budgetary priorities measured by the novel Carceral Resource Index (CRI), contrasting investments in carceral systems with funding for health and social support across the 50 most populous cities in the United States (U.S.). Bivariate correlations, and unadjusted and adjusted polynomial regression models were used to assess the relationship between budgetary investments and population concentration at extremes in terms of income, racial/ethnic composition, and education, controlling for other demographic characteristics. RESULTS: In our sample, median CRI was -0.59 (IQR -0.64, -0.45), with only seven cities exhibiting positive CRI values. This indicates that most large U.S. cities spend more on carceral systems than on health and supportive services, combined. Adjusted polynomial models showed a convex relationship between the CRI and ICE-Education, and ICE-Race(White vs. Black)+Income, with quadratic terms that were positive and significant at p<0.05. After controlling for age, the strongest prioritization of carceral systems was observed in cities where the proportion of low-income Black residents approached or exceeded that of high-income white residents. CONCLUSIONS: Municipal prioritization of carceral investments over health and social support is pervasive in the U.S and exacerbated by racial and economic disparities. The CRI offers new opportunities to understand the role of government investments as a structural determinant of health and safety. Longitudinal research is warranted to examine the relationship between budget priorities, structural racism, and health outcomes.

Modelling the contribution of incarceration and public health oriented drug law reform to HCV transmission and elimination among PWID in Tijuana, Mexico.

BACKGROUND: Incarceration is associated with increased risk of hepatitis C virus (HCV) among people who inject drugs (PWID). Mexico's previous attempt in implementing a public health-oriented drug law reform resulted in minimal impact on incarceration among PWID. However, implementation of reforms alongside Mexico's HCV elimination program has the potential to reshape the HCV epidemic among PWID in the next decade. We use data from a cohort of PWID in Tijuana, Mexico, to inform epidemic modeling to assess the contribution of incarceration and fully implemented drug reform on HCV transmission and elimination among PWID. METHODS: We developed a dynamic, deterministic model of incarceration, HCV transmission and disease progression among PWID. The model was calibrated to data from Tijuana, Mexico, with 90% HCV seroprevalence among 10,000 PWID. We estimated the 10-year population attributable fraction (PAF) of incarceration to HCV incidence among PWID and simulated, from 2022, the potential impact of the following scenarios: 1) decriminalization (80% reduction in incarceration rates); 2) fully implemented drug law reform (decriminalization and diversion to opiate agonist therapy [OAT]); 3) fully implemented drug law reform with HCV treatment (direct-acting antivirals [DAA]). We also assessed the number DAA needed to reach the 80% incidence reduction target by 2030 under these scenarios. RESULTS: Projections suggest a PAF of incarceration to HCV incidence of 5.4% (95% uncertainty interval [UI]:0.6-11.9%) among PWID in Tijuana between 2022-2032. Fully implemented drug reforms could reduce HCV incidence rate by 10.6% (95%UI:3.1-19.2%) across 10 years and reduce the number of DAA required to achieve Mexico's HCV incidence reduction goal by 14.3% (95%UI:5.3-17.1%). CONCLUSIONS: Among PWID in Tijuana, Mexico, incarceration remains an important contributor to HCV transmission. Full implementation of public health-oriented drug law reform could play an important role in reducing HCV incidence and improve the feasibility of reaching the HCV incidence elimination target by 2030.

Impact of SHIELD Police Training on Knowledge of Syringe Possession Laws and Related Arrests in Tijuana, Mexico.

Between 2015 and 2018, we provided training for 1806 municipal police officers in Tijuana, Mexico, in an effort to improve their knowledge and behaviors related to HIV and injection drug use. Correct knowledge of syringe possession laws improved from 56% before training to 94% after training and was sustained at 24 months (75%). Knowledge improvement was associated with decreases in arrests for syringe possession over time (adjusted odds ratio [AOR] = 0.87; 95% confidence interval [CI] = 0.85, 0.90). Officers with correct knowledge had significantly lower odds of reporting arrests (AOR = 0.63; 95% CI = 0.44, 0.89). Training was associated with sustained improvements in knowledge and practices that advance public health. (Am J Public Health. 2022;112(6):860-864. https://doi.org/10.2105/AJPH.2021.306702).

The introduction of fentanyl on the US-Mexico border: An ethnographic account triangulated with drug checking data from Tijuana.

BACKGROUND: Illicitly-manufactured fentanyls (fentanyl) have changed the risk environment of people who use drugs (PWUD). In California and many western US states, the opioid overdose rate spiked from 2016 to 2021, driven largely by fentanyl. Mexican border cities act as transit through-points for the illicit drug supply and similar evolving health risks are likely to be present. Nevertheless, due to data gaps in surveillance infrastructure, little is known about fentanyl prevalence in Mexico. METHODS: We employ intensive ethnographic participant-observation among PWUD, as well as key informants including harm reduction professionals, EMTs, and physicians on the front lines in Tijuana, Mexico. We triangulate interview data and direct observations of consumption practices with n=652 immunoassay-based fentanyl tests of drug paraphernalia from mobile harm reduction clinics in various points throughout the city. RESULTS: PWUD informants described a sharp increase in the psychoactive potency and availability of powder heroin-referred to as "china white"-and concomitant increases in frequency of overdose, soft tissue infection, and polysubstance methamphetamine use. Fentanyl positivity was found among 52.8% (95%CI: 48.9-56.6%) of syringes collected at harm reduction spaces, and varied strongly across sites, from 2.7% (0.0-5.7%) to 76.5% (68.2-84.7%), implying strong market heterogeneity. Controlling for location of collection, syringe-based fentanyl positivity increased by 21.7% (10.1-42.3%) during eight months of testing. Key informants confirm numerous increased public health risks from fentanyl and describe the absence of a systematic or evidence-based governmental response; naloxone remains difficult to access and recent austerity measures have cut funding for harm reduction in Mexico. CONCLUSIONS: Fentanyl, linked to powder heroin, is changing the risk environment of PWUD on the US-Mexico border. Improved surveillance is needed to track the evolving street drug supply in Mexico and related health impacts for vulnerable populations. Structural factors limiting access to naloxone, harm reduction, substance use treatment, and healthcare, and minimal overdose surveillance, must be improved to provide an effective systemic response.