A Decade of Firearm Injuries: Children Caught in the Crossfire.

INTRODUCTION: Firearm injuries (FIs) are the leading cause of preventable morbidity and mortality in pediatric patients. In this study, we aim to define evolving trends and avenues for prevention. METHODS: Following institutional review board approval, medical records of patients presenting to our two State-Designated Level 1 Pediatric Trauma Centers for treatment of FIs from 2010 to 2019 were retrospectively reviewed. Data was analyzed with Chi-Squared and Student's t-test; P-value <0.05 was significant. RESULTS: 1037 FI encounters from 1005 unique patients aged 0-21 y were included. 70.4% (n = 730) were determined to be assaults, 26.1% (n = 271) unintentional, and 1.7% (n = 18) self-inflicted injuries. Overall mortality was 4.5% (n = 45). FI victims were most commonly African American (n = 836, 80.6%), male (n = 869, 83.8%), aged 13-17 (n = 753, 72.6%), and from single-parent families (n = 647, 62.4%). The incidence of FIs increased significantly over the last 5 y of the study (2010-2014, 6.8 FIs/month), compared to 2015-2019 (averaging 10.6 FIs/month, P < 0.0001). Concurrently, FI related fatality increased from an average of 2.6 deaths/year (2010-2014) to 6.4 deaths/year (2015-2019, P = 0.064). Results were subanalyzed for pediatric patients aged 0-14 y. For the entire cohort, 12.1% (n = 116) recidivists were identified. Geographic patterns of injury were identified, with 75% of all FIs clustered in a single urban region. CONCLUSIONS: Incidence of pediatric FIs is increasing in recent years, with high mortality rates. Violence and recidivism are geographically concentrated, offering an opportunity for targeted interventions.

Identifying overlaps and disconnects between media reports and official records of nonfatal firearm injuries in Indianapolis, Indiana, 2021-2022.

OBJECTIVE: Open-source data systems, largely drawn from media sources, are commonly used by scholars due to the lack of a comprehensive national data system. It is unclear if these data provide an accurate and complete representation of firearm injuries and their context. The study objectives were to compare firearm injuries in official police records with media reports to better identify the characteristics associated with media reporting. METHODS: Firearm injuries were identified in open-source media reports and compared to nonfatal firearm injury (n = 1642) data from official police records between January 1, 2021 to December 31, 2022 in Indianapolis, Indiana. Events were matched on date, location, and event circumstances. Four multivariate, multi-level mixed effects logistic regression models were conducted to assess which survivor, event, and community characteristics were associated with media reporting. Data were analyzed 2023 - January 2024. RESULTS: Media reported 41% of nonfatal shootings in 2021 and 45% in 2022(p < 0.05), which is approximately two out of every five shootings. Shootings involving multiple survivors, children, and self-defense were more likely to be reported, whereas unintentional shootings and shootings that occurred in structurally disadvantaged communities were less likely to be reported. CONCLUSIONS: Findings suggest that relying on media reports of firearm injuries alone may misrepresent the numbers and contexts of shootings. Public health interventions that educate journalists about these important issues may be an impactful firearm violence prevention strategy. Also, it is critical to link data systems at the local level to ensure interventions are designed and evaluated using accurate data.

Population-Based Assessment of Urban Versus Rural Child Fatalities From Firearms in a Midwestern State.

INTRODUCTION: Several studies have evaluated differences in firearm injury patterns among children based on regionalization. However, many of these studies exclude patients who die before arriving at a trauma center. We therefore hypothesize that important population-based differences in pediatric firearm injuries may be uncovered with the inclusion of both prehospital firearm mortalities and patients treated at a tertiary children's hospital. METHODS: Patients less than 15 y of age who sustained a firearms-related injury/death between the years 2012 and 2018 were identified in: (1) death certificates from the Office of Vital Statistics State of Indiana and (2) Riley Hospital for Children at Indiana University Health Trauma Registry. Counties of injury were classified as either urban, midsized, or rural based on the National Center for Health Statistic's population data. Significant variables in univariate analysis were then assessed using multivariate logistic regression models. RESULTS: A total of 222 patients were identified. Median age of firearm injury survivors was 13 (interquartile range 7-14), while the median age of nonsurvivors was 14 (interquartile range 11-15), P = 0.040. The proportion of suicide was significantly higher in rural counties (P < 0.001). When controlling for shooter intent, patients from a rural or midsized county had statistically significant higher odds of dying before reaching a hospital than their urban counterpart (rural odds ratio [OR] 5.67 [95% confidence interval {CI} 2.23, 14.38]; midsized OR 6.53 [95% CI 2.43, 17.46]; P < 0.001). CONCLUSIONS: Important differences exist between pediatric firearm injuries based on where they occur. Public health initiatives aimed at reducing pediatric firearm injury and death should not exclude rural pediatrics patients.

A Closer Look at the Rising Epidemic of Mass Shootings in the United States and Its Association With Gun Legislation, Laws, and Sales.

INTRODUCTION: Mass shootings pose a considerable threat to public safety and significantly cost the United States in terms of lives and expenses. The following are the specific aims of this study: (1) to assess US mass shootings, firearm-related sales, laws, and regional differences from 2015 to 2021 and (2) to investigate changes in mass shootings and firearm sales before and during the Coronavirus Disease 2019 pandemic. METHODS: A retrospective review was conducted of mass shootings, gun sales, and laws regarding the minimum age required to purchase a firearm within the United States from 2015 to 2021. The 10 states/regions with the greatest mean mass shootings/capita from 2015 to 2021 were selected for further analysis. RESULTS: Mass shootings correlated significantly with firearm sales from 2015 to 2021 nationwide (P < 0.02 for all). The growth in mass shootings, the number killed/injured, and gun sales were greater in 2020 and 2021 compared to the years prior. The 10 states with the highest mean mass shooting/capita over the study period were Alabama, Arkansas, the District of Columbia, Illinois, Louisiana, Maryland, Mississippi, Missouri, South Carolina, and Tennessee. No significant correlation was found between the number of mass shootings/capita and the minimum age to purchase a firearm. CONCLUSIONS: Firearm sales correlated significantly with mass shootings from 2015 to 2021. Mass shootings and gun sales increased at greater rates during the Coronavirus Disease 2019 pandemic compared to the years before the pandemic. Mass shootings exhibited inconsistent trends with state gun laws regarding the minimum age to purchase a firearm. Future studies may consider investigating the methods by which firearms used in mass shootings are obtained to further identify targets for prevention.

Rethinking "recidivism" in firearm injury research and prevention.

Interpersonal firearm injuries pose a persistent public health threat in the United States (US). Strategic interventions to curb these injuries require evaluation of measurable outcomes that prove effectiveness and substantiate efforts for wider scaling and implementation. One common outcome of interest used among injury prevention researchers and practitioners is 'recidivism' referring to recurrent injury from acts of violence in a previously firearm injured person. In this commentary we urge that the term which can insinuate racialized criminality and reinforce stigma, no longer be used to describe people who experience firearm injuries. We also advocate for reconsideration of 'recidivism' as an ideal evaluation metric for the success of tertiary firearm injury prevention programs.

Using multiple imputation by super learning to assign intent to nonfatal firearm injuries.

The number of nonfatal firearm injuries in the US by intent (e.g., due to assault) is not reliably known: First, although the largest surveillance system for hospital-treated events, the Healthcare Cost and Utilization Project Nationwide Emergency Department Sample (HCUP-NEDS), provides accurate data for the number of nonfatal firearm injuries, injury intent is not coded reliably. Second, the system that reliably codes intent, the CDC's National Electronic Injury Surveillance System - Firearm Injury Surveillance Study (NEISS-FISS), while large enough to produce stable estimates of the distribution of intent, is too small to produce stable estimates of the number of these events. Third, a large proportion of cases in NEISS-FISS, notably in early years of the system, are coded as of "undetermined intent." Trends in the proportion of nonfatal firearm injuries by intent in NEISS-FISS thus depend on whether these cases are treated as a distinct category, or, instead, can be re-classified through imputation. We contrast the distributions of nonfatal firearm injury by intent generated using multiple imputation with those generated using complete-case analyses and analyses that consider "undetermined intent" as a distinct category. We produce estimates of the annual number of firearm injuries by intent in a two-step process. First, we impute intent for cases coded as "undetermined" using Multiple Imputation by Super Learning (MISL). Second, we apply MISL-derived distributions to aggregate count data from HCUP-NEDS. The proportion of non-fatal firearm assaults appears to increase over time when injuries coded as undetermined are included as a category. By contrast, the proportion of assaults remains relatively constant over time in complete-case and multiply imputed analyses. Differences between complete-case and multiple imputation approaches become apparent in subgroup analyses. Trends in the number of nonfatal firearm injuries by intent, 2006-2016, derived in our two-step process, are relatively flat. Multiple imputation strategies recovered intent distribution trends that differed from trends derived using methods that are not designed to account for the multiple complex relationships of missingness present in NEISS - FISS data. When applied to NEISS - FISS, MISL imputation produces plausible distributional estimates of firearm injury by intent.

Reprint of "Using multiple imputation by super learning to assign intent to nonfatal firearm injuries".

The number of nonfatal firearm injuries in the US by intent (e.g., due to assault) is not reliably known: First, although the largest surveillance system for hospital-treated events, the Healthcare Cost and Utilization Project Nationwide Emergency Department Sample (HCUP-NEDS), provides accurate data for the number of nonfatal firearm injuries, injury intent is not coded reliably. Second, the system that reliably codes intent, the CDC's National Electronic Injury Surveillance System - Firearm Injury Surveillance Study (NEISS-FISS), while large enough to produce stable estimates of the distribution of intent, is too small to produce stable estimates of the number of these events. Third, a large proportion of cases in NEISS-FISS, notably in early years of the system, are coded as of "undetermined intent." Trends in the proportion of nonfatal firearm injuries by intent in NEISS-FISS thus depend on whether these cases are treated as a distinct category, or, instead, can be re-classified through imputation. We contrast the distributions of nonfatal firearm injury by intent generated using multiple imputation with those generated using complete-case analyses and analyses that consider "undetermined intent" as a distinct category. We produce estimates of the annual number of firearm injuries by intent in a two-step process. First, we impute intent for cases coded as "undetermined" using Multiple Imputation by Super Learning (MISL). Second, we apply MISL-derived distributions to aggregate count data from HCUP-NEDS. The proportion of non-fatal firearm assaults appears to increase over time when injuries coded as undetermined are included as a category. By contrast, the proportion of assaults remains relatively constant over time in complete-case and multiply imputed analyses. Differences between complete-case and multiple imputation approaches become apparent in subgroup analyses. Trends in the number of nonfatal firearm injuries by intent, 2006-2016, derived in our two-step process, are relatively flat. Multiple imputation strategies recovered intent distribution trends that differed from trends derived using methods that are not designed to account for the multiple complex relationships of missingness present in NEISS - FISS data. When applied to NEISS - FISS, MISL imputation produces plausible distributional estimates of firearm injury by intent.

Low-velocity, civilian firearm extremity injuries-review and update for radiologists.

Firearm injuries are a preventable epidemic in the USA. Extremities are commonly affected in gunshot injuries. Such injuries may be complex with concomitant osseous, soft tissue, and neurovascular components. The maximum wounding potential of a projectile is determined by its kinetic energy and the proportion of the kinetic energy that is transmitted to the target. Accurate assessment of ballistic injuries is dependent on utilizing the principles of wound ballistics, accurate bullet count, and ballistic trajectory analysis. The goals of this article are to review wound ballistics and the imaging evaluation of extremity civilian firearm injuries in the adult population, with emphasis on ballistic trajectory analysis, specific ballistic fracture patterns, and diffuse, secondary soft tissue ballistic injuries.

[Characteristics of the trajectory of projectiles after penetration of biological and non-biological obstacles in shots fired from various types of firearms]. / Kharakteristika traektorii dvizheniya snaryadov posle probitiya biologicheskikh i nebiologicheskikh pregrad pri vystrelakh iz razlichnykh obraztsov ognestrel'nogo oruzhiya.

The purpose of the work was to study the movement trajectory of the projectile after breaking through an obstacle made of various materials installed at various angles to the aiming line when firing from rifled and traumatic weapons. As a result of a series of experimental shots by shells fired from a traumatic pistol «Jorge¼ (9×22 mm RA cartridge with an initial velocity of 300±20 m/s and a bullet weight of 0.7 g) and the Blaser R93 carbine (Norma Jaktmatch 9.3×62 mm hunting cartridge with an initial speed of 765 m/s and a bullet weight of 11 g) it has been found that, when punching both biological simulators and triplex glass located at the angles of 40-60° with respect to the aiming line, a deflection of the firearm from the aiming line is observed.

Postmortem CT and autopsy findings in nine victims of terrorist attack.

In a foreign country, a religious terrorist group raided a restaurant, using pipe bombs, sharp-edged weapons, and various types of firearms (handguns, submachine guns, and AK-47 assault rifles) loaded with normal and prohibited bullets to kill foreigner customers, some of whom were Italian tourists. Local pathologists performed forensic autopsies on the bodies, but we were asked to perform additional external examinations, postmortem computed tomography (PMCT) scans, and then a second round of complete autopsies on nine victims (5 females and 4 males). Four victims had slash wounds inflicted by sharp-edged weapons, mostly localized in the head and neck. All but two victims had gunshot wounds. Finally, three casualties had injuries caused by the explosion of improvised explosive devices. In all cases, PMCT was a reliable source of information and provided strategic guide during autopsies, helping identify and describe the injuries and thus reconstruct the events. Therefore, in these cases, we suggest integrating the autopsy findings with the postmortem radiological data.

United States trends in healthcare charges for pediatric firearm injuries.

BACKGROUND: From 2009 to 2016, >21,000 children died and an estimated 118,000 suffered non-fatal injuries from firearms in the United States. Limited data is available on resource utilization by injury intent. We use hospital charges as a proxy for resource use and sought to: 1) estimate mean charges for initial ED and inpatient care for acute firearm injuries among children in the U.S.; 2) compare differences in charges by firearm injury intent among children; and 3) evaluate trends in charges for pediatric firearm injuries over time, including within intent subgroups. METHODS: In this repeated cross-sectional analysis of the 2009-2016 Nationwide Emergency Department Sample, we identified firearm injury cases among children aged ≤19 years using ICD-9-CM and ICD-10-CM external cause of injury codes (e-codes). Injury intent was categorized using e-codes as unintentional, assault-related, self-inflicted, or undetermined. Linear regressions utilizing survey weighting were used to examine associations between injury intent and healthcare charges, and to evaluate trends in mean charges over time. RESULTS: Among 21,951 unweighted cases representing 102,072 pediatric firearm-related injuries, mean age was 16.6 years, and a majority were male (88.2%) and publicly insured (51.5%). Injuries were 53.9% assault-related, 37.7% unintentional, 1.8% self-inflicted, and 6.7% undetermined. Self-inflicted injuries had higher mean charges ($98,988) than assault-related ($52,496) and unintentional ($28,618) injuries (p < 0.001). Self-inflicted injuries remained associated with higher mean charges relative to unintentional injuries, after adjusting for patient demographics, hospital characteristics, and injury severity (p = 0.015). Mean charges for assault-related injuries also remained significantly higher than charges for unintentional injuries in multivariable models (p < 0.001). After adjusting for inflation, mean charges for pediatric firearm-related injuries increased over time (p-trend = 0.018) and were 23.1% higher in 2016 versus 2009. Mean charges increased over time among unintentional injuries (p-trend = 0.002), but not among cases with assault-related or self-inflicted injuries. CONCLUSIONS: Self-inflicted and assault-related firearm injuries are associated with higher mean healthcare charges than unintentional firearm injuries among children. Mean charges for pediatric firearm injuries have also increased over time. These findings can help guide prevention interventions aimed at reducing the substantial burden of firearm injuries among children.

Bile pulmonary embolism-related sudden death following an abdominal firearm injury: An autopsy case report and review of literature.

Bile pulmonary embolism (BPE) is a rare type of non-thrombotic pulmonary embolism (NTPE). For bile emboli to pass through the bloodstream to the lungs, there must be a connection created between the biliary and the venous vessels. This article reports a fatal BPE in a 12-year-old child who died 14 days following an abdominal firearm injury. The right lobe of the liver had a yellowish-green stained lacerated track along with bile collection. Both lungs were congested with peripheral dark areas in all lobes. Microscopically, many interstitial pulmonary arterioles were occluded by bile emboli along with the presence of hemorrhagic infarcts. Other than the present case, only 21 cases of BPE were published in the literature until the present day. The history of hepatic trauma and/or hepatobiliary disease in association with pulmonary manifestations points to BPE as a possible diagnosis. However, visualization of bile emboli within the pulmonary vessels is pathognomonic for BPE.

Injury and treatment patterns of ballistic pelvic fractures by anatomic location.

INTRODUCTION: Pelvic ballistic injuries threaten critical gastrointestinal, vascular, and urinary structures. We report the treatment patterns and injury profiles of ballistic pelvic fractures and the association between location of ballistic fractures of the pelvis and visceral injuries. METHODS: A prospectively collected database at an academic level I trauma center was reviewed for clinical and radiographic data on patients who sustained one or more ballistic fractures of the pelvis. Main outcomes compared included: procedures with orthopedic surgery, emergent surgery, concomitant intrapelvic injuries, and mortality. RESULTS: Eighty-six patients were included. Eight patients (9.3%) underwent surgical debridement with orthopedic surgery, no ballistic pelvic fractures required surgical stabilization. The anatomical locations of ballistic pelvic fractures included: 10 (14.7%) anterior ring, 13 (19.1%) posterior ring, 27 (39.7%) anterior column, and 18 (20.9%) posterior column. There was a statistically significant association between anterior ring and rectal injury. The association between anterior ring injury and bladder injury approached significance. CONCLUSIONS: This case series included 86 patients with a ballistic fracture of the pelvis, none requiring pelvic ring surgical stabilization. The unpatterned behavior of these injuries demands a high suspicion for visceral injury, with special attention to the rectum and bladder in the setting of anterior ring involvement. LEVEL OF EVIDENCE: IV.

Youth exposure to violence involving a gun: evidence for adverse childhood experience classification.

Adverse childhood experiences (ACEs) have historically included child maltreatment, household dysfunction, and other critical issues known to impact children negatively. Although youth experiences with violence are broadly captured in some ACE measures, youth exposure to violence involving a gun has not been included specifically in the operationalizing, and therefore scientific study, of ACEs. There are numerous implications of this omission, including limiting access to ACE interventions that are currently available and resources for individuals who have been exposed to gun violence. Thus, and given the persistent prevalence of gun violence in the US, we conducted a systematic review of the literature over the past two decades on the assessment of and response to ACEs and gun violence. Eighty-one journal articles across four search engines met our inclusion criteria. Our findings provide evidence that youth gun violence exposure should be classified as an ACE. In addition to increasing access to resources for youth affected by gun violence, these findings may improve the likelihood of funding and research into gun violence, with direct implications for prevention and intervention efforts.

Penetrating head injuries in children presenting to the emergency department in Australia and New Zealand: A PREDICT prospective study.

AIM: Penetrating head injuries (pHIs) are associated with high morbidity and mortality. Data on pHIs in children outside North America are limited. We describe the mechanism of injuries, neuroimaging findings, neurosurgery and mortality for pHIs in Australia and New Zealand. METHODS: This was a planned secondary analysis of a prospective observational study of children <18 years who presented with a head injury of any severity at any of 10 predominantly paediatric Australian/New Zealand emergency departments (EDs) between 2011 and 2014. We reviewed all cases where clinicians had clinically suspected pHI as well as all cases of clinically important traumatic brain injuries (death, neurosurgery, intubation >24 h, admission >2 days and abnormal computed tomography). RESULTS: Of 20 137 evaluable patients with a head injury, 21 (0.1%) were identified to have sustained a pHI. All injuries were of non-intentional nature, and there were no gunshot wounds. The mechanisms of injuries varied from falls, animal attack, motor vehicle crashes and impact with objects. Mean Glasgow Coma Scale on ED arrival was 10; 10 (48%) had a history of loss of consciousness, and 7 (33%) children were intubated pre-hospital or in the ED. Fourteen (67%) children underwent neurosurgery, two (10%) craniofacial surgery, and five (24%) were treated conservatively; four (19%) patients died. CONCLUSIONS: Paediatric pHIs are very rare in EDs in Australia and New Zealand but are associated with high morbidity and mortality. The absence of firearm-related injuries compared to North America is striking and may reflect Australian and New Zealand firearm regulations.

Epidemiologic analysis and mortality outcome of firearm injuries in French Guiana (2016-2019).

BACKGROUND: French Guiana (FG) is a French territory located in South America with the highest rate of armed assaults. FG presents a poorly developed road system and a young and precarious population that makes the geographical and socio-demographic characteristics specific. No data concerning the firearm injury management are available in this country. Studying thesis trauma could permit to improve the management of victims. The objective of this study is to investigate the epidemiology of firearm injuries in FG, to define characteristics of the victims, and to assess factors associated with death. These identified factors could enable target primary prevention and intensification of medical management. METHODS: From January 2016 to December 2019, we conducted a retrospective study at the Cayenne General Hospital (CGH), including all patients admitted for firearm injuries in the emergency department, the medical emergency and resuscitation service, and the forensic service. A bivariate analysis was performed to assess relevant clinical data that were entered into a logistic regression model to assess factors associated with death. RESULTS: A total of 871 files were analyzed concerning 340 patients included after cross-checking. Victims were mainly males (90%) and young (30 ± 11 years old). The injury occurred mainly at night (60%), in a context of assaults (83%) and with long-barreled guns (82%). Among the 290 patients managed at the CGH, 60% were hospitalized including 12% that were in the intensive care unit, 41% that required surgical treatment, and 7% that died in hospital. The overall average length of stay was 10 ± 18 days. Overall mortality (n = 71, 21%) is statistically associated with male gender (p = 0.007) and suicide context (p < 0.001). In multivariate analysis, the sites of wounds (head and neck, thorax; p < 0.001) as well as induced organ injuries (neurological, respiratory, and vascular; p < 0.005) were independent factors associated to mortality. CONCLUSIONS: This work underlines the high incidence of ballistic trauma in FG. This mainly involves a young and male population linked to the use of long arms and assaults. Despite the geographical difficulties of the territory and the technical platform deficits (no neurosurgery, no cardiothoracic surgery, no interventional radiology), the mortality is comparable to other studies, but remains more than twice as high as in mainland France. Finally, despite a change in legislation restricting access to firearms, our results show that gunshot firearm injuries remain a major public health concern requiring greater political actions.

Using intent to get ahead of pediatric cranial firearm injuries.

OBJECTIVE: Pediatric firearm injuries (PFI) are a public health crisis. Little is known about how injury intent may influence the outcome of pediatric cranial firearm injuries (PCFI). The current study sought to compare demographics and outcomes of PCFI based on intent of injury. METHODS: The Nationwide Readmission Database (2010-2014) was queried to identify patients <18 years old with PCFI. Demographics and outcomes were compared by injury intent (assault, self-inflicted, unintentional), and results were weighted for national estimates to create a population-based cohort study. RESULTS: There were 1,365 cases of PCFI identified for an incidence of 11% of all PFI. The majority of patients were male (83 %), >13 years (81 %), and had an injury severity score >15 (79 %). Overall PCFI mortality was 43 %, compared to 6 % for all PFI. Assault was the most common intent (51 %), followed by self-inflicted (25 %), and unintentional (24 %). Assault was more likely to occur in patients from low-income households (61 % vs. 31 % self-inflicted vs. 42 % unintentional), p < 0.001. Unintentional injuries occurred in those <13 years old (40 % vs. 12 % assault vs. 16 % self-inflicted) and more often resulted in facial fracture (19 % vs. 11 % vs. 13 %), all p < 0.001. Readmission rate within the year was 21 %. The majority (56 %) of readmissions were unplanned, and the rate was highest for assault (77 % vs. <1 % self-inflicted vs. 44 % unintentional, p < 0.001). CONCLUSIONS: PCFI are associated with significant morbidity and mortality. Demographics and outcomes vary by intent of injury; knowledge of these patterns can direct future interventions to reduce injuries and impact outcomes.

Trapped in Violence: A Life Table Analysis of Firearm Injury and Death Among Adolescent Black Males.

PURPOSE: We report the chances of 14-year-old males becoming victims of firearm injury or death before age 25 in Philadelphia, Pennsylvania. METHODS: Using life table methods, we followed 4,501 Black males aged 14 years, and a comparison group of 1,751 White males, over 11 years. RESULTS: Among 14-year-old Black males, the risk of a nonfatal firearm injury before age 25 was 10.1% (95% confidence interval, 9.2%-11.0%), the risk of death from firearms was 2.5% (1.7%-3.2%), and the combined risk was 12.5% (11.0%-14.1%). Among White males, the risk of nonfatal firearm injury was 0.8% (0.3%-1.2%), the risk of death was 0.3% (0.02%-0.5%), and the combined risk was 1.0% (0.5%-1.5%). DISCUSSION: Risk estimates reveal the dire likelihood of firearm injury or death among Black adolescent males in Philadelphia. Immediate interventions are needed to de-escalate conflicts, provide supports, and address the upstream causes of violence like poverty and structural racism.

Firearm Injury Prevention.

Firearms are the leading cause of death for US youth, overtaking motor vehicle collisions in 2020. Approximately 65% are due to homicide, 30% are due to suicide, 3.5% are due to unintentional injuries, 2% are undetermined intent, and 0.5% are from legal interventions. In homes with firearms, the likelihood of unintentional death, suicide, and homicide is three to four times higher than those without firearms. Secure storage of firearms, having them locked, unloaded, and separate from ammunition can prevent unintentional firearm injuries.

Increases in adolescent firearm injuries were associated with school closures during COVID-19.

BACKGROUND: Mitigation measures, including school closures, were enacted to protect the public during the COVID-19 pandemic. However, the negative effects of mitigation measures are not fully known. Adolescents are uniquely vulnerable to policy changes since many depend on schools for physical, mental, and/or nutritional support.  This study explores the statistical relationships between school closures and adolescent firearm injuries (AFI) during the pandemic. METHODS: Data were drawn from a collaborative registry of 4 trauma centers in Atlanta, GA (2 adult and 2 pediatric). Firearm injuries affecting adolescents aged 11-21 years from 1/1/2016 to 6/30/2021 were evaluated. Local economic and COVID data were obtained from the Bureau of Labor Statistics and the Georgia Department of Health. Linear models of AFI were created based on COVID cases, school closure, unemployment, and wage changes. RESULTS: There were 1,330 AFI at Atlanta trauma centers during the study period, 1,130 of whom resided in the 10 metro counties. A significant spike in injuries was observed during Spring 2020. A season-adjusted time series of AFI was found to be non- stationary (p = 0.60). After adjustment for unemployment, seasonal variation, wage changes, county baseline injury rate, and county-level COVID incidence, each additional day of unplanned school closure in Atlanta was associated with 0.69 (95% CI 0.34- 1.04, p < 0.001) additional AFIs across the city. CONCLUSION: AFI increased during the COVID pandemic. This rise in violence is statistically attributable in part to school closures after adjustment for COVID cases, unemployment, and seasonal variation. These findings reinforce the need to consider the direct implications on public health and adolescent safety when implementing public policy.