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Posts tagged community violence intervention (CVI)
Breaking the Fever: Inside One City’s Bold Plan to Stop the Spread of Violent Crime

By Logan Seacrest

In 2020, while the world battled one pandemic, a different kind of outbreak in St. Louis, Missouri, reached a fever pitch. It had its own transmission vectors and hotspots, spreading from person to person and overwhelming the city’s defenses. As fatalities hit a 50-year peak, the epidemic felt like a permanent, incurable fact of life. But the death and suffering weren’t caused by a novel virus or force of nature—it was something far more intimate and entrenched: lethal violence.

For seven years, St. Louis had among the highest per-capita homicide rate for cities with 250,000 people or more. Yet, against this bloody backdrop, a new story began to unfold. Over the past four years, St. Louis has witnessed a remarkable and sustained decline in murders. By 2023, homicides had dropped to their lowest point in a decade—a staggering 39.1 percent reduction since the peak. Other key indicators like “shots fired” calls and juvenile shooting victims are also trending downward. This turnaround isn’t the result of getting “tough on crime” or deploying the military on the streets; it’s due in large part to a group of people with a shared belief: that violence behaves like a disease—one that can be diagnosed, treated, and even cured.

The backbone of this network is the city’s Office of Violence Prevention (OVP), established in July 2022 as a central hub to coordinate and fund community violence intervention (CVI) strategies. This move marked a critical turning point, transforming what was once a collection of promising but isolated community programs into a unified, city-wide public safety apparatus.

According to Brett DeLaria with OVP, the goal is to “create a truly integrated and strategic approach to violence reduction.” Relying on a combination of street outreach, cognitive behavioral therapy, and focused deterrence, CVI provides a pathway out of violence, inoculating communities at the source of the infection.

While many factors influence urban crime trends, a more granular look at the data from St. Louis provides evidence for CVI’s direct impact. From 2023 to 2024, the specific neighborhoods targeted by the OVP saw a 52 percent decrease in murders and non-negligent manslaughter, significantly outpacing declines seen elsewhere in the city. This data point is critical because it functions as a natural experiment: In locations where the city tried CVI, the results were disproportionately positive.

Just as a compromised immune system makes infection more likely, violence thrives in environments weakened by poverty, housing instability, and generations of segregation and disinvestment. As in any other city, violence in St. Louis isn’t random—it’s highly concentrated. In 2022, over 90 percent of regional homicides happened in either St. Louis County or St. Clair County. Across these jurisdictions, violent crime clusters among hotspots that account for a disproportionate share of the region’s shootings. Just as epidemiologists track a disease to its source, CVI programs identify the specific individuals and locations at highest risk.

While data suggests that the fever of violence may be starting to break, statistics do not necessarily capture the day-to-day reality for many folks in St. Louis. According to a recent poll, a majority of residents still identify gun violence as the region’s most urgent problem, highlighting the gap between reality and perception. Underscoring the fragility of the city’s progress, federal funding for the OVP is set to dry up next year. While the office will continue to be funded by the city, this shift places the onus squarely on local leaders.

The question facing St. Louis is no longer if this approach works, because the evidence confirms it does. The question is whether the city has the political will to continue. For a community so thoroughly brutalized by violence, turning back now would be a form of public health malpractice—a deliberate choice to let the epidemic flare back up.

Washington, DC: R Institute, 2025.

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Characterizing Violence Intervention Street Outreach Participants and Service Dosage: Implications for Measurement and Evaluation 

By Marisa Ross, Susan Burtner, Andrew Papachristos and IPR

Introduction: Community violence intervention street outreach (CVI-SO) strategies are growing in popularity as non-punitive approaches to solving the public health problem of community gun violence. Evidence on the effectiveness of CVI-SO on rates of violence is mixed and faces challenges due to concerns with documentation and data privacy, intentional selection bias in program design, and variation in participant risk and needs. Effective evaluation requires methods that accurately capture the scope and delivery of services, starting with a greater understanding of the services CVI participants receive and how they vary based on individual characteristics. Methods: This study explores the services that participants received from a coalition of Chicago CVI organizations from 2017–2023. Considering administrative and programmatic data from over 4,000 participants’ nearly 200,000 interactions with providers, the researchers examine patterns in demographics, network-based risk factors, and service provision and dosage. They then use descriptive and latent profile analyses to characterize the “typical” participant in Chicago. Results: Results show that CVI work relies heavily on long-term mentoring relationships. Service patterns show that latent groups exist with varying dosage: higher dosage participants with higher risk for gun violence receive more frequent contacts over longer periods, demonstrating how organizations adjust their approach based on participant needs. Profiles that primarily receive behavioral or social supports-related services also emerge. Conclusions: Findings underscore the need for evaluation frameworks that capture both the strategic variation in service delivery and the multiple pathways through which CVI programs influence participant outcomes.

Evanston, IL: Northwestern University, 2025. 36p.

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