Homicide Research Articles

DIREITOS HUMANOS E O AMPARO AS FAMÍLIAS VÍTIMAS DE CRIMES CONTRA A VIDA

The scope of this study is to address human rights – a central aspect of any legal reflection, after all, all rights have an anthropocentric nature – in line with the social and legal support of families whose lives were cut short by violence. In particular, the families of victims of crimes against life. In the wake of this process, the research problem consists of asking how to strengthen means of social and legal protection for “those who remain”, that is, the relatives of victims of completed homicides. The general objective is to reflect on crimes against life from a different perspective of criminal protection: one that focuses not on the life that was cut short, but on the life that, with difficulty, must continue. Hence the importance of a fair investigation, trial, instruction and judgment to ensure that the truth is reconstructed and clarified for the relatives. The methodology used consists of a bibliographic review, carried out in a critical, systemic and integrative manner of the relevant literature, based on an inductive method, explanatory research and a qualitative approach. First, the article discusses the dignity of the human person as a legal- philosophical value. Second, it recognizes the protection of the legal asset “life” as played by criminal law. Third, it analyzes ways to socially and legally protect families of homicide victims. As a result, it is established that the social and legal protection of families of homicide victims requires an integrated and multifaceted approach. First, the dignity of the human person, as a fundamental value, must be central to policies and practices aimed at these families, ensuring that their integrity and rights are preserved and respected throughout the entire judicial process. Second, it is imperative that criminal law, when protecting the legal asset “life”, is not limited to punishing the perpetrator, but also considers the lasting impact on survivors and seeks to offer ongoing support. In addition, the research showed that, in order to strengthen social and legal protection, it is necessary to implement effective mechanisms of psychological, social and legal support, which go beyond palliative measures.

State Divorce Laws, Reproductive Care Policies, and Pregnancy-Associated Homicide Rates, 2018-2021

ImportanceBarriers to divorce and reproductive health care can threaten the health and safety of pregnant and recently pregnant females.ObjectiveTo examine state laws about divorce, reproductive health care (access to contraception, family planning services, and abortion), and pregnancy-associated homicide rates in US states over a 4-year period (2018-2021).Design, Setting, and ParticipantsIn this cross-sectional study, bivariate tests and regressions were used to analyze crude rates of pregnancy-associated homicide from the National Violent Death Reporting System in 181 state-years for calendar years 2018 to 2021, with analyses conducted on September 8, 2024.ExposuresAccess to divorce while pregnant and reproductive health care over a 4-year period in the US.Main Outcomes and MeasuresPrimary outcomes (pregnancy-associated homicide by intimate partners vs non–intimate partners and rates among younger Black, Hispanic, and White females) were assessed using the National Violent Death Reporting System. Negative binomial regression was used to test 2 hypotheses: access to divorce while pregnant and reproductive health care are associated with pregnancy-associated homicide rates.ResultsIndividual level data, including exact sample size, were not available in this study of state-level homicide rates. Negative binomial regression analysis showed that, where finalizing divorce during pregnancy is prohibited, intimate partner homicide rates (incidence rate ratio [IRR], 2.11; 95% CI, 1.09-4.08; P = .03) and rates among younger (age 10-24 years) White females (IRR, 2.39; 95% CI, 1.12-5.09; P = .02) were significantly higher. In state-years with greater access to reproductive health care, rates were significantly lower for non–intimate partner homicide (IRR, 0.92; 95% CI, 0.87-0.98; P = .01) and for younger Black females (IRR, 0.91; 95% CI, 0.87-0.96; P < .001) and younger Hispanic females (IRR, 0.87; 95% CI, 0.79-0.96; P = .007).Conclusions and RelevanceIn this cross-sectional study of pregnancy-associated homicide rates, barriers to divorce were associated with higher homicide rates and access to reproductive health care was associated with lower homicide rates. This study highlights the association between state legislation and pregnancy-associated homicide in the US, which is important information for policymakers.

The Relationship Between Serum Cholesterol, Triglycerides, and Self-Reported Appetitive and Reactive Aggression, as Well as Violent Crimes in Male Forensic Patients with Substance Use Disorder

Numerous studies have linked lower levels of serum cholesterol with heightened aggression, violent crimes, and violent deaths across diverse populations, including forensic psychiatric patients, criminals, and the broad public. Interestingly, this association appears to be more pronounced in men than in women. Conversely, findings regarding serum triglycerides present a more nuanced picture, with some studies indicating heightened aggression with elevated levels and others suggesting the opposite. However, most studies have neglected to examine this phenomenon in conjunction with psychological traits. Additionally, no prior research has explored the association between serum lipid levels and different types of aggression, e.g., reactive, instrumental, or appetitive. Considering these gaps, our study aimed to assess serum cholesterol and triglyceride levels upon clinic admission and correlate them with scores from the Appetitive and Facilitative Aggression Scale (AFAS), a self-rating questionnaire assessing reactive and appetitive aggression. We conducted our investigation on a cohort of 135 forensic psychiatric patients undergoing drug addiction treatment under Section 64 of the German Criminal Code. This provision offers a nearly unique opportunity worldwide for individuals who have committed crimes under the influence of drugs or in the context of their addiction to receive specialized treatment. Using non-linear Spearman correlation analyses, we observed an inverse relationship between serum concentrations of both cholesterol and triglycerides and AFAS appetitive violence scores but not for reactive aggression. Additionally, triglyceride levels exhibited an inverse association with the prevalence of violent crimes as an index crime. In conclusion, blood lipids may affect numerous areas of health and disease beyond what is currently known, offering a potential shift in how we understand their role in aggression.

National Incidence of Nurse Suicide and Associated Features.

The aim of this study was to estimate the national incidence of nurse suicide. Nurses are at a higher risk of suicide than nonnurses; however, data have been limited since 2018. This study used a retrospective cohort design using 2017-2021 National Violent Death Reporting System suicides. Female nurses had higher suicide rates than female nonnurses in 2018 (incidence rate ratio, 1.21 [95% confidence interval (CI), 1.05-1.39]), 2019 (1.41 [95% CI, 1.23-1.60]), 2020 (1.26 [95% CI, 1.08-1.45]), and 2021 (1.35 [95% CI, 1.17-1.55]), whereas male nurses were comparable with male nonnurses. Nurses had higher odds of mental health problems (adjusted odds ratio, 1.28 [95% CI, 1.13-1.46], P < .001), job problems (1.60 [95% CI, 1.33-1.92], P < .001), and use of poisoning (1.54 [95% CI, 1.37-1.74], P < .001). Nurses had higher odds of using opioids, cardiovascular/diabetic agents, and drugs not prescribed for home use. Female nurses are at a higher risk of suicide than other females. Multimodal nurse suicide prevention strategies remain indicated.

Neighborhood homicide rate and odds of colorectal adenoma among adult patients seeking colonoscopy.

Chronic exposure to ambient stressors, including neighborhood crime, may have a detrimental impact on the body's stress response system with implications for colorectal carcinogenesis. We examined associations between the mean neighborhood homicide rates from 2000 and 2018 and diagnosis of colorectal adenoma among patients at the University of Illinois Health and Hospital System in Chicago, Illinois, between 2015 and 2018. Of the 5,225 patients who underwent colonoscopy and were included in the analytic dataset, 60% had colorectal adenoma. Older age, male sex, and higher body mass index (BMI) were associated with greater odds of colorectal adenoma. The neighborhood homicide rate was associated with identifying as Black and Hispanic and higher BMI. A mediation analysis showed that the neighborhood homicide rate effects on colorectal adenoma were mediated through BMI. The study concluded that older age, male sex, and higher BMI significantly increase the odds of colorectal adenoma, with neighborhood homicide rate indirectly influencing this risk through its association with BMI, particularly among Black and Hispanic individuals.

What do we know about femicide in Italy? Data and insights from a repeated cross-sectional study

Abstract Background Gender-based violence represents a huge public health issue, affecting mental, physical health and productivity. It is a significant obstacle to achieving gender equality and the empowerment of all women. While the overall homicide rate is decreasing in Italy, femicide, the intentional killing of women due to gender-related motivations, remains stable over time. This is the first study in Italy to evaluate potential risk factors of femicide, exploring the sociodemographic characteristics of victims and perpetrators of femicides, as well as the geographic distribution across Italy, with insights into differences between the size of municipalities and between geographic areas. Methods A repeated cross-sectional study was conducted to investigate femicides in Italy from 2020 to 2023 using data sources from Non Una Di Meno, an Italian NGO, and the Italian National Institute of Statistics. Results Our preliminary findings show that the majority (83%) of homicides of women were femicides. On a final sample of 403 femicides, in most cases (94,3%) the victims were more likely to be hit by their current or former partner or by a family member. In 97% of cases perpetrator was a man. In more than 50% of cases, both the victims and the perpetrators were under 55 years old (respectively, 51,8% and 57,9%). Femicide rates was 0.33 per 100,000 women. There appear to be no significant differences between the rates of femicide as the size of the municipality and the geographic macro-area vary, highlighting the extensive spread of the phenomenon throughout the territory. Conclusions Our findings show that femicide is a systematic and widespread phenomenon that occurs mostly within the home and needs interventions at the European level to prevent systemic violence against women. Moreover, this study provides methodological considerations to define femicide, suggests improvements to data collection methods and offer insights for future research in this field. Key messages • It is important to gather robust data on gender-based homicide, as it represents a public health issue. • Femicide is a pervasive and systematic phenomenon that predominantly occurs within the home and requires intervention at the European level.

Archiving the Housing Conjuncture

The past months have continued to exacerbate crises of housing, home, displacement, dispossession, and other state-sanctioned forms of violence and premature death. We witness erasure of histories, lives lived, belongings, and homes, which are intentional strategies to forcibly remove people from place and to make it seem as though they were never there. The authors thus document this conjunctural moment in radical housing struggles and collectively analyze and interpret the current political, economic, and social conditions, not for the sake of the analysis itself, but to inform strategies for action. This documentation encourages us to reflect on the role and value of archives in radical housing organizing. We define radical housing archiving as a collective intervention strategy responsive to the immediate housing crises built upon care for just housing futures. In this editorial, we aim to situate the archive while considering its possibilities for housing movements and radical care.

Circumstantial Factors Among Kentucky Nurse Suicide Decedents, 2005 to 2019.

Background: Nurse suicide, a complex occupational health concern, is urgently in need of research due to the personal and occupational suicide risk factors experienced by nurses, namely mental health problems (e.g., depression), job problems, and substance misuse. Therefore, the study aims were to determine the contextual characteristics and circumstantial factors associated with nurse suicide in Kentucky. Methods: Secondary suicide data were obtained from the Kentucky Violent Death Reporting System (KYVDRS) from 2005 to 2019. Nurse suicide cases were identified using the Bureau of Labor Statistics Standard Occupational Classification. A mixed-methods analysis using descriptive statistics and qualitative evaluation was conducted to determine the distributions of demographic, injury, and weapon characteristics, followed by a qualitative analysis of the KYVDRS incident narrative text of nurse suicide decedents. Results: There were 88 decedents identified with a nursing occupation. The predominant means of death for male (59%) and female (45%) nurses involved firearms. Thematic analysis showed nurse decedents experienced a mental health problem (51%) and premeditated (50%) suicide preceding death. Incidentally, 51% of all cases experienced multiple circumstantial factors (e.g., relationship problems and premeditation) preceding their death by suicide. Discussion/Application to Practice: Nurse suicide decedents experienced multifactorial risk factors preceding their death by suicide, namely depression, premeditated suicide, and relationship problems. Occupational health practitioners and health care organizations can implement individual and organizational prevention efforts to help prevent nurse suicide.

Co-occurrence of Intimate Partner Violence and Suicide Mortality Among Adolescents and Young Adults in the United States

PurposeSuicide is the second leading cause of death among people ages 10–24 in the United States (US). Intimate partner violence (IPV) is also prevalent, and studies suggest that IPV is associated with youth suicide risk. However, limited research has investigated such associations. We conducted an in-depth analysis of youth suicides that were preceded by or coincided with IPV (i.e., IPV-related) to characterize how decedents were involved in IPV, IPV types experienced, and prior legal systems involvement. MethodsUsing US National Violent Death Reporting System (2014–2018) data for suicide decedents aged 7–24 (n = 15,430 deaths), we manually reviewed case narratives for IPV-related suicides (n = 882) and coded details concerning IPV circumstances. We conducted bivariate analyses to compare IPV-related suicides to other (non-IPV) youth suicides and examined differences in antecedent circumstances between IPV perpetrators (n = 651) and victims (n = 81) using multivariable logistic regression. ResultsAmong IPV-related suicides, most decedents were male and were described as IPV perpetrators. Physical IPV was most frequently reported. Compared to decedents with a history of IPV perpetration, decedents with a history of IPV victimization were more often female and younger. Narratives of IPV victim decedents had higher odds of reporting physical IPV; narratives of IPV perpetrator decedents had higher odds of reporting psychological IPV. DiscussionFuture research should explore the relationship between IPV perpetration and suicide and potential impacts on surviving partners. Research and practice should seek to develop effective assessments and interventions for young people that address IPV and suicide risk simultaneously.

Using data fusion with multiple imputation to correct for misclassification in self-reported exposure: a case-control study of cannabis use and homicide victimization

BackgroundCannabis use has been causally linked to violent behaviors in experimental and case studies, but its association with homicide victimization has not been rigorously assessed through epidemiologic research.MethodsWe performed a case-control analysis using two national data systems. Cases were homicide victims from the National Violent Death Reporting System (NVDRS), and controls were participants from the National Survey on Drug Use and Health (NSDUH). While the NVDRS contained toxicological testing data on cannabis use, the NSDUH only collected self-reported data, and thus the potential misclassification in the self-reported data needed to be corrected. We took a data fusion approach by concatenating the NSDUH with a third data system, the National Roadside Survey of Alcohol and Drug Use by Drivers (NRS), which collected toxicological testing and self-reported data on cannabis use for drivers. The data fusion approach provided multiple imputations (MIs) of toxicological testing results on cannabis use for the participants in the NSDUH, which were then used in the case-control analysis. Bootstrap was used to obtain valid statistical inference.ResultsThe analyses revealed that cannabis use was associated with 3.55-fold (95% CI: 2.75–4.35) increased odds of homicide victimization. Alcohol use, being Black, male, aged 21–34 years, and having less than a high school education were also significantly associated with increased odds of homicide victimization.ConclusionsCannabis use is a major risk factor for homicide victimization. The data fusion with MI method is useful in integrative data analysis for harmonizing measures between different data sources.

Characterising fire or burn-related fatalities in the USA using the National Violent Death Reporting System, 2003–2020

ObjectivesIntentional fire or burn-related deaths are rare in the USA compared with some countries, but do occur, and our knowledge of their epidemiology is limited. The objective of this study...

The Forgotten Feminist

Kate Millett (1934–2017) is best known for her text Sexual Politics (1970). Despite her sudden rise to popularity in the women’s liberation movement, she was quickly dismissed and forgotten, even while continuing to produce new works. Victoria Hesford and Sheila Jeffreys have, respectively, examined the role of homophobia and shifts in feminist theory on Millett’s cataclysmic rise and fall. Expanding on these accounts, the article addresses how sanist discourse pathologized Millett’s bisexuality and polyamory as symptomatic of mental illness to delegitimize her critiques of heteronormative patriarchal psychiatry. It draws a connection between Millett’s public outing in 1970, her first involuntary psychiatric hospitalization in 1973, and the unfavourable and problematic literary responses to her memoirs Flying in 1974 and The Loony-Bin Trip in 1990. Relying on Maria Rovito’s Madwoman theory, the article argues literary critics participate in the silencing and pathologization of Millett by continuing to frame her as mentally ill, instead of as a survivor of psychiatric abuse. It seeks to demonstrate that Madwoman theory is an ethical feminist disability methodology for literary criticism that restores Millett’s voice by unveiling the intersections of heteronormative monosexism and sanism that functions to silence queer Madwomen through epistemic violence and social death.

Building a Legacy of Research for Black Survivors of Homicide Victims: A Call to Action for Social Work

Building a Legacy of Research for Black Survivors of Homicide Victims: A Call to Action for Social Work

Prevalence and Risk Factors of Gang Membership in a Brazilian Birth Cohort

There is no longitudinal evidence on risk factors for gang membership in low- and middle-income countries, despite organized crime groups posing major challenges, including high homicide rates in Latin America. Furthermore, adverse childhood experiences (ACEs) have been largely overlooked in gang-related research worldwide. To examine the associations of ACEs up to 15 years of age with past-year gang membership at 18 years of age and to compare crime and criminal justice involvement between gang members and non-gang members. This cohort study assessed children from the 1993 Pelotas (Brazil) Birth Cohort-an ongoing population-based, prospective study. Assessments were undertaken perinatally (1993) and when the children were ages 11 (2004), 15 (2008), 18 (2011), and 22 (2015) years. All children born in 1993 were eligible (N = 5265), and 5249 (99.7%) were enrolled at birth. The study sample (N = 3794 [72.1%]) included those with complete data on ACEs. Data analyses were conducted from February to August 2024. Twelve ACEs were assessed up to 15 years of age via child self-report and/or maternal report, including physical neglect, physical abuse, emotional abuse, sexual abuse, domestic violence, maternal mental illness, parental divorce, ever being separated from parents, parental death, poverty, discrimination, and neighborhood fear. These experiences were examined using a single adversity approach, cumulative risk, and latent classes. The main outcome was past-year gang membership at 18 years of age, assessed via self-report and analyzed using multivariate imputation. Of 3794 participants, 1964 (51.8%) were female and 1830 (48.2%) were male, and 703 (18.5%) were Black, 2922 (77.0%) were White, and 169 (4.5%) were coded as "other" race or ethnicity (no additional details are available to further disaggregate the other category). On the basis of the imputed data, 1.6% (SE, 0.2 percentage points) of participants reported gang membership at 18 years of age. Physical abuse (odds ratio [OR], 2.76; 95% CI, 1.27-5.98), emotional abuse (OR, 2.76; 95% CI, 1.51-5.02), domestic violence (OR, 3.39; 95% CI, 1.77-6.48), parental divorce (OR, 2.04; 95% CI, 1.17-3.54), and separation from parents (OR, 3.13; 95% CI, 1.54-6.37) were associated with an increased risk of gang membership. A dose-response association was observed, with 4 or more ACEs increasing the risk (OR, 8.86; 95% CI, 2.24-35.08). In latent class analysis, the class with child maltreatment and household challenges was associated with a higher risk of gang membership than the low-adversities class (OR, 7.10; 95% CI, 2.37-21.28). There was no robust evidence that children exposed to household challenges and social risks were at increased risk of gang membership (OR, 2.28; 95% CI, 0.46-11.25). In this prospective cohort study, ACEs, particularly child maltreatment and family conflict, were associated with gang involvement when examined individually, cumulatively, and as clusters in a high-crime environment in Brazil. These findings underscore the value of integrating the ACE framework into gang-related research and the potential to reduce gang-related crime by reducing ACEs.

Homicide-Suicides in Pakistan: An analysis of Newspaper reports of two years

Background and Objective: Our understanding of homicide-suicide (H-S), a rare yet tragic event, is sparse. While the phenomenon has been studied in the West for many years, only limited literature is available from Asia and none to our knowledge from Pakistan. There is evidence of complexity of the interaction between cultural, societal, and psychological mechanisms underlying this phenomenon; therefore, research findings from the Western countries cannot be directly applied in non-Western societies. Our objective was to study homicide-suicides in Pakistan, describe the characteristics of offenders and victims, determine the types of H-S, and examine possible motives and any events prior to the offense. Methods: In the absence of any official data on homicide-suicides, we used newspaper surveillance approach of four most widely circulated Pakistani newspapers (one Urdu and three English Daily) for two years (1st January 2019 to 31st December 2020). Each case was categorized using the modified Marzuk et al., Tardiff, and Hirsch’s classification of homicide-suicides. Descriptive statistics were used to analyze the data that was then compared with published literature. Results: There were 114 H-S incidents with 198 victims of homicide during the study period, reported in the newspapers. Familial H-S particularly filicide-suicide were predominant, followed by spousal/ consortial H-S. Forty-one (36%) H-S involved multiple victims. The perpetrators across all categories of H-S were predominantly male (67%); the victims were predominantly women and children. Firearms were used in most incidents. The primary motive for the majority of H-S cases was familial, financial, and social stressors. Conclusions: The study highlights several unique patterns (predominance of familicide, multiple victims including high proportion of children) and a series of vulnerabilities (incidents related mostly to familial/ financial and social stressors) that overlap each other and ultimately lead to this tragic end. There is need to increase our understanding and develop effective evidence-based prevention strategies for H-S in Pakistan. It is also very important to have a national surveillance network and national violent death reporting system in the country for studying H-S cases, and for evaluating the impact of prevention programs. doi: https://doi.org/10.12669/pjms.40.10.9812 How to cite this: Imran N, Ayub M, Haider II, Rafiq B, Tahir SM, Naveed S, et al. Homicide-Suicides in Pakistan: An analysis of Newspaper reports of two years. Pak J Med Sci. 2024;40(10):2196-2201. doi: https://doi.org/10.12669/pjms.40.10.9812 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

A natural language processing approach to detect inconsistencies in death investigation notes attributing suicide circumstances

BackgroundData accuracy is essential for scientific research and policy development. The National Violent Death Reporting System (NVDRS) data is widely used for discovering the patterns and causing factors of death. Recent studies suggested the annotation inconsistencies within the NVDRS and the potential impact on erroneous suicide-circumstance attributions.MethodsWe present an empirical Natural Language Processing (NLP) approach to detect annotation inconsistencies and adopt a cross-validation-like paradigm to identify possible label errors. We analyzed 267,804 suicide death incidents between 2003 and 2020 from the NVDRS. We measured annotation inconsistency by the degree of changes in the F-1 score.ResultsOur results show that incorporating the target state’s data into training the suicide-circumstance classifier brings an increase of 5.4% to the F-1 score on the target state’s test set and a decrease of 1.1% on other states’ test set.ConclusionsTo conclude, we present an NLP framework to detect the annotation inconsistencies, show the effectiveness of identifying and rectifying possible label errors, and eventually propose an improvement solution to improve the coding consistency of human annotators.

Psychosocial and pandemic-related circumstances of suicide deaths in 2020: Evidence from the National Violent Death Reporting System.

To describe and explore variation in 'pandemic-related circumstances' among suicide decedents during the first year of the COVID-19 pandemic. We identified pandemic-related circumstances using decedents' text narratives in the 2020 National Violent Death Reporting System. We use time-series analysis to compare other psychosocial characteristics (e.g., mental health history, interpersonal difficulties, financial strain) of decedents pre-pandemic (2017/2018: n = 56,968 suicide and n = 7,551 undetermined deaths) to those in 2020 (n = 31,887 suicide and n = 4,100 undetermined). We characterize common themes in the narratives with pandemic-related circumstances using topic modeling, and explore variation in topics by age and other psychosocial circumstances. In 2020, n = 2,502 (6.98%) narratives described pandemic-related circumstances. Compared to other deaths in 2020 and to the pre-pandemic period, decedents with pandemic-related circumstances were older and more highly educated. Common themes of pandemic-related circumstances narratives included: concerns about shutdown restrictions, financial losses, and infection risk. Relative to decedents of the same age that did not have pandemic-related circumstances in 2020, those with pandemic-related circumstances were more likely to also have financial (e.g., for 25-44 years, 43% vs. 12%) and mental health (76% vs. 66%) psychosocial circumstances, but had similar or lower prevalence of substance abuse (47% vs. 49%) and interpersonal (40% vs. 42%) circumstances. While descriptive, these findings help contextualize suicide mortality during the acute phase of the COVID-19 pandemic and can inform mental health promotion efforts during similar public health emergencies.

Demographic Profile of Violent Asphyxial deaths in JSS Medical College, Mysuru – Five year retrospective study

The epidemiological risk factors for violent asphyxia deaths can contribute to construct a socioeconomic and demographic profile of victims of asphyxial deaths. This study is also very crucial in identifying the risk factors, triggers for common asphyxia deaths and especially suicidal asphyxial deaths like hanging based on the profile and data derived from this study. This study was undertaken to analyse the different aspects of asphyxial deaths.Main focus is given to study the type of asphyxia, age, sex distribution and seasonal variation, also to know the pattern in work area, seasonal and demographic variations. Among the asphyxial deaths hanging is the commonest which constituted 81% of the total asphyxia deaths and was predominant in males. Drowning is the second most frequent type of asphyxialdeath followed by strangulation. The incidence of hanging is highest during winter season. This suggests that seasonal factors and its resulting psychological fluctuations might aggravate depression and mood, which then might finally impact the victim’s suicidal tendencies leading to increased incidences of hanging.

Death, flies and environments: Towards a qualitative assessment of insect (Diptera) colonization of human cadavers retrieved from sites of death in Brazil

Empirical data on decomposition ecology have long established blowflies (Calliphoridae) and flesh flies (Sarcophagidae) (Diptera) as the most frequent colonizers of carrion, especially at early stages of decomposition. However, the scarcity of studies based on human cadavers has hindered inferences about colonization of homicide victims in real case scenarios. We describe here a survey of insects associated with cadavers retrieved from the site of death in Northeastern Brazil, with emphasis on the association between species diversity and the surrounding environment. We examined 81 cadavers, most of which were of men and resulting from violent death. Twelve cadavers (14.8 %) contained insect larvae, which were reared in the laboratory until adult emergence and identification. Ten species of Diptera effectively colonized the cadavers; seven of Family Calliphoridae – Chrysomya albiceps (Wiedemann, 1819), Chrysomya megacephala (Fabricius, 1794), Chrysomya putoria (Wiedemann, 1830), Cochliomyia macellaria (Fabricius, 1775), Hemilucilia segmentaria (Fabricius, 1805), Lucilia cuprina (Wiedemann, 1830), Lucilia eximia (Wiedemann, 1819) and three of Family Sarcophagidae, Blaesoxipha (Gigantotheca) stallengi (Lahille, 1907), Microcerella halli (Engel, 1931) and Peckia (Sarcodexia) lambens (Wiedemann, 1830). The species C. albiceps and C. macellaria were the most frequent colonizers, while Sarcophagidae was reported in only four cases. Insects were present on cadavers found in urban (n = 8) and rural (n = 4) sites, outdoors (n = 6) and inside (n = 6) residences. Presence of larvae was more frequent in the natural orifices in the head (n = 11). Clothing did not prevent from ovi/larviposition for most species. We present the first register of B. stallengi colonizing human corpses and expand the knowledge on the geographical distribution of necrophagous insects. Our protocol may contribute to forensic entomology in areas exposed to fast decomposition, such as the Neotropical Region.

The leading causes of death in the US and Mexico's pediatric population are related to violence: a note on secondary analyses of registered deaths from 2000 to 2022.

our objective was to analyze the trends in the leading causes of death among the pediatric population aged 1-19 years in Mexico and the United States (US) from 2000 to 2022. Methods. Data for Mexico were sourced from the National Institute of Statistics and Geography (INEGI), while the US data were extracted from the Centers for Disease Control and Prevention's Wide-ranging Online Data for Epidemiologic Research (CDC-WONDER) databases. Homicide has been the leading cause of death since 2017 in Mexico and since 2019 in US youths aged 1-19. In Mexico, it reached 6.5 deaths per 100,000 people in 2022. Despite the overall pediatric mortality decline from 2000 to 2022 in both countries, the pediatric homicide rate has increased by 93.3 and 35.8% In Mexico and the US, respectively, and suicide by 86.6 and 36.9%. In both countries, death by firearm-related injuries had risen in a parallel sense. In the US, deaths by drug overdose and poisoning have increased by 314.8%. Despite advancements in infant healthcare over the past two decades in Mexico, there remains a significant gap in the provision of healthcare services to the adolescent population. Addressing issues related to violence, mental health, and substance abuse through targeted public policies is imperative for both Mexico and the US, especially given their shared border region.