RESUMO
BACKGROUND: Violence is a leading cause of death and disability for young people and has serious impacts on prospects across the lifecourse. The education sector is a crucial setting for preventing youth violence through incorporating programmes that address attitudes and behaviours. The Mentors in Violence Prevention (MVP) programme aims to change harmful attitudes and norms, and increase non-violent bystander intervention, through a peer mentoring approach. To date there is limited evidence on the effectiveness of the intervention in UK school settings. The aim of the current study was to evaluate the impact of the programme on students' attitudes and knowledge related to violence prevention. METHODS: The study employed a mixed methods design. Pre and post surveys measured changes in students' (aged 11-18) attitudes and knowledge related to violence prevention and bystander behaviour, gender stereotyping, acceptability of violence, and perceptions of others' willingness to intervene. Interviews/focus groups with programme delivers and students, and anonymised programme data were used to explore and supplement survey findings. RESULTS: Overall, perceptions of the programme content and delivery were positive. Several beneficial impacts of the programme were found for mentors (students delivering the programme), including significant positive changes on measures of knowledge and attitudes towards violence prevention and the bystander approach, acceptability of violence perpetration, and perceptions of other students' willingness to intervene (effect sizes were small-medium). However, the study found no significant change on any of the outcomes amongst mentees (younger students receiving the programme from mentors). Despite this, qualitative evidence suggested mentees enjoyed the content of the programme and the peer-led delivery, and this built relationships with older students. Qualitative evidence also identified additional benefits of the programme for mentors, including leadership and communication skills, and increased confidence and supportive relationships. CONCLUSIONS: Evidence from this study suggests MVP is effective as a targeted programme for mentors, but no significant evidence was found to demonstrate its effectiveness as a universal bystander and violence prevention programme for mentees. Whilst further research with more robust study design is needed, developing mentors as leaders in violence prevention is a valuable impact of the programme in its own right.
Assuntos
Mentores , Preconceito , Adolescente , Humanos , Instituições Acadêmicas , Estudantes , Inglaterra , Violência/prevenção & controleRESUMO
BACKGROUND: Nightlife environments are high risk settings for sexual violence and bystander intervention programmes are being developed in response. However, more research is needed to understand nightlife-related sexual violence, and factors that influence bystander interventions. This study examined nightlife patron's experiences of sexual violence and associated factors; and relationships between attitudes towards, awareness and experience of sexual violence, and confidence to intervene. METHODS: Cross-sectional on-street survey of nightlife patrons (N = 307, aged 18+) on a night out in an English city. Surveys (7.30pm-1.30am; Wednesday-Saturday) established sexual violence awareness, myth acceptance, and experience, and confidence to intervene. Participant's socio-demographics, nightlife alcohol consumption, and frequency of nightlife usage were collected. RESULTS: 58.0% had ever experienced sexual violence whilst on a night out. In adjusted analyses, sexual violence was higher amongst females (adjusted odds ratio [AOR] 4.0; p < 0.001), and regular nightlife patrons (AOR 2.1; p < 0.05). The majority agreed that they would feel confident asking someone who has experienced sexual violence if they are okay/would like support (92.2%). In adjusted analyses, confidence to intervene was higher amongst those who agreed that sexual violence was an issue in nightlife (AOR 3.6; p < 0.05), however it reduced as sexual violence myth acceptance increased (AOR 0.5; p < 0.05). CONCLUSION: Sexual violence is a pertinent issue in nightlife. Programmes aiming to address nightlife-related sexual violence must address the wider social norms that promote sexual violence, and ensure patrons understand the extent and significance of the issue, to increase confidence to positively intervene.
Assuntos
Intoxicação Alcoólica , Delitos Sexuais , Feminino , Humanos , Estudos Transversais , Consumo de Bebidas Alcoólicas , Delitos Sexuais/prevenção & controle , Inquéritos e QuestionáriosRESUMO
The Martinsburg Initiative (TMI) is a community-based model developed in Martinsburg, West Virginia, that implements a comprehensive approach to adverse childhood experiences and substance use prevention and mitigation by leveraging partnerships in public health and health care, public safety, and education. TMI receives coordinated federal funding and technical assistance from the Centers for Disease Control and Prevention, the Washington-Baltimore High Intensity Drug Trafficking Agency, and the National Association of County and City Health Officials to integrate evidence-based and promising strategies. It advances such strategies by translating them for implementation within the community, evaluating the reach and potential impact of the model, and by engaging key stakeholders. Preliminary results describing program reach and short-term outcomes collected for a subset of the interventions during implementation are presented. The model uses touchpoints across multiple community sectors in the city of Martinsburg to break the cycle of trauma and substance use across the life span.
Assuntos
Saúde Pública , Transtornos Relacionados ao Uso de Substâncias , Centers for Disease Control and Prevention, U.S. , Atenção à Saúde/métodos , Humanos , Instituições Acadêmicas , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/prevenção & controle , Estados UnidosRESUMO
The current study examined the association between gambling problem severity and health risk behaviours, health and wellbeing. A cross-sectional survey (including representative population and supplementary convenience samples) was conducted with 2303 adult residents of a British Island. Gambling problem severity was assessed using the Problem Gambling Severity Index. The EQ-5D-5L, WEMWBS and AUDIT-C were used to measure general health, mental wellbeing and alcohol use, respectively. Other measures included diet, physical exercise and tobacco use. Differences between gambling severity levels for each measure were analysed using logistic regression adjusting for age, sex and income. Compared to non-problem gamblers, moderate/high severity gamblers had higher odds of a poor diet, low physical exercise and poor general health. Tobacco use was associated with both low and moderate/high severity gambling. Low severity, but not moderate/high severity gambling, was significantly associated with binge and higher risk drinking behaviours. Health risk behaviours tended to cluster, with a graded relationship between gambling problem severity and odds of reporting at least two health risk behaviours. Compared to non-problem gamblers, low severity gamblers were approximately twice as likely and moderate/high severity gamblers were three times as likely, to have low mental wellbeing. Findings suggest associations between gambling problems and a range of health risk behaviours and health issues, and crucially that such issues are not limited to gamblers with the highest severity of problems. Addressing gambling across the whole continuum of risk should be a key public health priority.
Assuntos
Comportamento Aditivo/epidemiologia , Jogo de Azar/epidemiologia , Comportamentos de Risco à Saúde , Saúde Mental/estatística & dados numéricos , Distribuição por Idade , Consumo de Bebidas Alcoólicas/epidemiologia , Estudos Transversais , Feminino , Jogo de Azar/psicologia , Humanos , Modelos Logísticos , Masculino , Assunção de Riscos , Índice de Gravidade de Doença , Meio Social , Adulto JovemRESUMO
BACKGROUND: Adverse childhood experiences (ACEs) can have substantial impacts on individuals' health and social prospects across the life course. Retrospectively enquiring with adults about their experience of ACEs to inform support provision is an emerging intervention across services/countries, however little is known about the processes of implementation. OBJECTIVES: The study aimed to examine the drivers to successful implementation of ACE enquiry. PARTICIPANTS AND SETTINGS: Nine services in a UK county participated in a test-and-learn project implementing ACE enquiry (i.e. the REACh™ programme). METHODS: Interviews with programme stakeholders (n = 37) and a follow-up survey exploring experiences of implementation (n = 72). Interviews were thematically analysed, with themes mapped against an implementation framework and triangulated with survey data. RESULTS: Analyses identify key implementation drivers across three domains: competency; organisational; and leadership. Findings suggest that implementing ACE enquiry requires ongoing and flexible training and supervision to increase staff knowledge and confidence. Supportive leadership is needed across all service levels to respond to routine and unforeseen barriers to implementation. Further, a flexible approach to implementation is needed which attunes to service and practitioner needs and adapts implementation to ensure a trauma-informed and person-centred approach to ACE enquiry. CONCLUSIONS: Study findings may assist programme implementers in the development of system-wide approaches to ACE enquiry. However, further data on implementation of ACE enquiry models is needed to increase evidence on implementing and maintaining such programmes in real-world public health settings. Critically, further research is needed to understand the impacts of such programmes when successfully implemented.
RESUMO
Despite the effectiveness of medication-assisted treatment (MAT), adults receiving MAT experience opioid cravings and engage in non-opioid illicit substance use that increases the risk of relapse and overdose. The current study examines whether negative urgency, defined as the tendency to act impulsively in response to intense negative emotion, is a risk factor for opioid cravings and non-opioid illicit substance use. Fifty-eight adults (predominately White cis-gender females) receiving MAT (with buprenorphine or methadone) were recruited from online substance use forums and asked to complete self-report questionnaires on negative urgency (UPPS-P Impulsive Behavior Scale), past 3-month opioid cravings (ASSIST-Alcohol, Smoking, and Substance Involvement Screening Test), and non-opioid illicit substance use (e.g., amphetamines, cocaine, benzodiazepines). Results revealed that negative urgency was associated with past 3-month opioid cravings, as well as past month illicit stimulant use (not benzodiazepine use). These results may indicate that individuals high in negative urgency would benefit from receiving extra intervention during MAT.
Assuntos
Buprenorfina , Transtornos Relacionados ao Uso de Opioides , Adulto , Feminino , Humanos , Metadona/uso terapêutico , Buprenorfina/uso terapêutico , Analgésicos Opioides/uso terapêutico , Transtornos Relacionados ao Uso de Opioides/tratamento farmacológico , Transtornos Relacionados ao Uso de Opioides/epidemiologia , Transtornos Relacionados ao Uso de Opioides/psicologia , Fissura , Tratamento de Substituição de Opiáceos/métodosRESUMO
BACKGROUND: Rising rates of fentanyl- and polydrug-involved drug overdose deaths have prompted inquiry into the role of drug supply in fatal overdose outcomes in the United States. To date, however, there have been few empirical investigations of drug enforcement strategies on fatal overdose rates, despite knowledge that both drug use and supply are often geographically distributed. To address this limitation, we examined measures of drug enforcement as predictors of next-year fatal overdose rates in the Washington/Baltimore High Intensity Drug Trafficking Area (W/B HIDTA). METHODS: We conducted mixed-effects models to examine the role of drug seizures and disruption in drug trafficking organizations (DTOs) and money laundering organizations (MLOs) on fatal overdose rates over a 5-year period (2016-2020) across 45 local jurisdictions in the W/B HIDTA region. Outcomes included any, opioid-involved, and fentanyl-involved fatal overdose. RESULTS: Adjusting for covariates, both the total number of drug seizures and amount of cocaine seized (in dosage units per capita) positively predicted next-year opioid- and fentanyl-involved fatal overdose rates. Disruption to DTO and MLO operations did not significantly predict next-year fatal overdose rates for any outcome. CONCLUSION: Supply-side enforcement activities alone may have limited impact on reducing fatal overdose rates, but may serve as important markers to identify communities at high risk of fatal overdose and facilitate targeted intervention. Our findings underscore the importance of comprehensive law enforcement approaches that extend beyond drug enforcement to integrate prevention, linkage to treatment, and harm reduction strategies as needed to address the overdose epidemic.
Assuntos
Overdose de Drogas , Tráfico de Drogas , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Humanos , Estados Unidos , Analgésicos Opioides , Overdose de Drogas/epidemiologia , Fentanila , ConvulsõesRESUMO
Globally, mental disorders are the leading cause of disability in children and adolescents. Previous research has demonstrated that supportive relationships are a key protective factor against poor mental health in children, particularly amongst those who have experienced adversity. However, fewer studies have examined the relative impact of different types of supportive relationships. The current study examined the association between level of family adult support, school adult support, and school peer support and mental wellbeing in a sample of children (age 8-15 years, N = 2,074) from schools in the UK. All three sources of support were independently associated with mental wellbeing. Analyses demonstrated a graded relationship between the number of sources of support and the odds of low mental wellbeing (LMWB), reflecting a cumulative protective effect. While all three sources of support were best, it was not vital, and analyses demonstrated a protective effect of school sources of support on LMWB amongst children with low family support. Peer support was found to be particularly important, with prevalence of LMWB similar amongst children who had high peer support (but low family and school adult support), and those who had high family and school adult support, (but low peer support), indicating that high peer support has an equivalent impact of two other protective factors. Findings from the study highlight the crucial context schools provide in fostering positive peer relationships and supportive teacher-student relationships to promote mental health and resilience for all children, including both those with and without supportive home environments.
RESUMO
Opioid overdoses within the United States continue to rise and have been negatively impacting the social and economic status of the country. In order to effectively allocate resources and identify policy solutions to reduce the number of overdoses, it is important to understand the geographical differences in opioid overdose rates and their causes. In this study, we utilized data on emergency department opioid overdose (EDOOD) visits to explore the county-level spatio-temporal distribution of opioid overdose rates within the state of Virginia and their association with aggregate socio-ecological factors. The analyses were performed using a combination of techniques including Moran's I and multilevel modeling. Using data from 2016-2021, we found that Virginia counties had notable differences in their EDOOD visit rates with significant neighborhood-level associations: many counties in the southwestern region were consistently identified as the hotspots (areas with a higher concentration of EDOOD visits) whereas many counties in the northern region were consistently identified as the coldspots (areas with a lower concentration of EDOOD visits). In most Virginia counties, EDOOD visit rates declined from 2017 to 2018. In more recent years (since 2019), the visit rates showed an increasing trend. The multilevel modeling revealed that the change in clinical care factors (i.e., access to care and quality of care) and socio-economic factors (i.e., levels of education, employment, income, family and social support, and community safety) were significantly associated with the change in the EDOOD visit rates. The findings from this study have the potential to assist policymakers in proper resource planning thereby improving health outcomes.
Assuntos
Overdose de Drogas , Overdose de Opiáceos , Humanos , Estados Unidos , Analgésicos Opioides , Serviço Hospitalar de Emergência , Overdose de Drogas/epidemiologia , Virginia/epidemiologiaRESUMO
There are concerns that the growing popularity of e-cigarettes promotes experimentation among children. Given the influence of the early years on attitude and habit formation, better understanding of how younger children perceive vaping before experimentation begins is needed, to prevent uptake and inform tobacco control strategies. We explored Welsh primary schoolchildren's (aged 7-11) awareness of e-cigarettes relative to tobacco smoking, their understanding of the perceived risks and benefits and their intentions and beliefs about vaping. Data was collected using a mix of methods in June and July 2017 from 8 purposively selected primary schools across Wales. Four hundred and ninety-five children (52% female) aged 7 years (n = 165), 9 years (n = 185) and 11 years (n = 145) completed a class-administered booklet encompassing a draw and write exercise and survey. Ninety-six children participated in 24 peer discussion groups comprised of 2 boys and 2 girls from each year group. Data were analysed independently and findings triangulated. Survey analyses used frequencies, descriptive statistics and chi-squared tests. Content analysis was undertaken on the draw and write data and peer discussion groups were analysed thematically. Study findings highlight that primary schoolchildren have general awareness of e-cigarettes. Vaping was perceived to be healthier than smoking and there was some recognition that e-cigarettes were used for smoking cessation. Understanding of any health harms was limited. Few children intended to smoke or vape in the future but almost half thought it was okay for grownups. Children's perceptions were influenced by exposure through family and friends. Findings suggest a need for e-cigarette education in primary schools, to highlight the associated risks of e-cigarette experimentation including the potential for tobacco initiation.
Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Conhecimentos, Atitudes e Prática em Saúde , Abandono do Hábito de Fumar , Vaping , Criança , Feminino , Humanos , Masculino , Fumar , País de GalesRESUMO
West Nile virus (WNV) infection and associated disease and mortality have been documented in numerous North American raptor species. Information regarding clinical presentations and long-term outcomes of WNV-infected raptors is important in the clinic for the diagnosis, treatment, and assessment of prognosis, as well as for understanding potential population level effects on raptor species. Raptors of 22 species admitted to a rehabilitation clinic were tested, from 2002 to 2005, for previous and acute WNV infection, while comparing clinical syndromes, trauma, and rehabilitation outcomes. Forty-two percent of admitted raptors (132/314) had been infected with WNV, and these presented with a WNV-attributed clinical disease rate of 67.4% (89/132). West Nile virus-infected raptors were less likely to be released (79/132 [59.8%]) than negative raptors (138/182 [75.8%]) and more likely to die or be euthanized (47/132 [35.6%] for WNV-infected vs. 32/182 [17.6%] for WNV-negative). However, WNV-infected raptors with neurologic disease were no less likely to be released (29/53 [54.7%]) than those without neurologic disease (50/79 [63.3%]). Clinical WNV-associated syndromes varied among species. Great horned owls (Bubo virginianus) were more likely to have neurologic signs, whereas American kestrels (Falco sparverius) and Swainson's hawks (Buteo swainsonii) were less likely to have neurologic signs. These results suggest that free-ranging raptors are frequently infected with WNV and that clinical syndromes differ among species. WNV has potentially devastating effects on raptors; however, rehabilitation of WNV-infected raptors can lead to positive outcomes, even for those having had severe neurologic disease.
Assuntos
Doenças das Aves/epidemiologia , Aves Predatórias/virologia , Febre do Nilo Ocidental/veterinária , Vírus do Nilo Ocidental/isolamento & purificação , Animais , Animais Selvagens/virologia , Doenças das Aves/mortalidade , Doenças das Aves/patologia , Reservatórios de Doenças/veterinária , Reservatórios de Doenças/virologia , Águias/virologia , Feminino , Falcões/virologia , Masculino , Prognóstico , Especificidade da Espécie , Estrigiformes/virologia , Resultado do Tratamento , Febre do Nilo Ocidental/epidemiologia , Febre do Nilo Ocidental/mortalidade , Febre do Nilo Ocidental/patologia , Vírus do Nilo Ocidental/patogenicidadeRESUMO
QUESTION: In people who have undergone cardiac surgery via median sternotomy, does modifying usual sternal precautions to make them less restrictive improve physical function, pain, kinesiophobia and health-related quality of life? DESIGN: Two-centre, randomised, controlled trial with concealed allocation, blinded assessors and intention-to-treat analysis. PARTICIPANTS: Seventy-two adults who had undergone cardiac surgery via a median sternotomy were included. INTERVENTION: Participants were randomly allocated to one of two groups at 4 (SD 1) days after surgery. The control group received the usual advice to restrict their upper limb use for 4 to 6 weeks (ie, restrictive sternal precautions). The experimental group received advice to use pain and discomfort as the safe limits for their upper limb use during daily activities (ie, less restrictive precautions) for the same period. Both groups received postoperative individualised education in hospital and via weekly telephone calls for 6 weeks. OUTCOME MEASURES: The primary outcome was physical function assessed by the Short Physical Performance Battery. Secondary outcomes included upper limb function, pain, kinesophobia, and health-related quality of life. Outcomes were measured before hospital discharge and at 4 and 12 weeks postoperatively. Adherence to sternal precautions was recorded. RESULTS: There were no statistically significant differences in physical function between the groups at 4 weeks (MD 1.0, 95% CI -0.2 to 2.3) and 12 weeks (MD 0.4, 95% CI -0.9 to 1.6) postoperatively. There were no statistically significant between-group differences in secondary outcomes. CONCLUSION: Modified (ie, less restrictive) sternal precautions for people following cardiac surgery had similar effects on physical recovery, pain and health-related quality of life as usual restrictive sternal precautions. Similar outcomes can be anticipated regardless of whether people following cardiac surgery are managed with traditional or modified sternal precautions. TRIAL REGISTRATION: Australian and New Zealand Clinical Trials Registry ANZCTRN12615000968572. [Katijjahbe MA, Granger CL, Denehy L, Royse A, Royse C, Bates R, Logie S, Nur Ayub MA, Clarke S, El-Ansary D (2018) Standard restrictive sternal precautions and modified sternal precautions had similar effects in people after cardiac surgery via median sternotomy ('SMART' Trial): a randomised trial. Journal of Physiotherapy 64: 97-106].
Assuntos
Procedimentos Cirúrgicos Cardíacos , Modalidades de Fisioterapia , Complicações Pós-Operatórias/prevenção & controle , Esternotomia , Extremidade Superior/fisiopatologia , Atividades Cotidianas , Idoso , Feminino , Humanos , Análise de Intenção de Tratamento , Masculino , Pessoa de Meia-Idade , Medição da Dor , Dor Pós-Operatória/prevenção & controle , Educação de Pacientes como Assunto , Estudos Prospectivos , Qualidade de VidaRESUMO
The safety and efficacy of a 2-dose series for the human papillomavirus vaccines rather than a 3-dose series in older children has not been well defined. This article reviews the literature summarizing the use of all 3 HPV vaccines (2vHPV, 4vHPV, 9vHPV) as a 2-dose series for females and 4vHPV and 9vHPV for males younger than 15 years. Six prospective trials evaluating immunogenicity of a 2-dose series of 2vHPV and/or 4vHPV, as well as an ongoing prospective clinical trial for 9vHPV, are discussed. The 2-dose series with Gardasil 9® in both males and females ages 9 to 14 years appears to be the most widely accepted recommendation. The exact time schedule between the 2 vaccines varies among studies, but it seems that they should be separated by 6 to 12 months. Federal and world-wide organizations' (ie, Centers for Disease Control and Prevention, Food and Drug Administration, and World Health Organization) opinions and recommendations on the appropriate scheduling of the vaccines are also highlighted.
Assuntos
Imunização/métodos , Infecções por Papillomavirus/prevenção & controle , Vacinas contra Papillomavirus/uso terapêutico , Criança , Humanos , Esquemas de ImunizaçãoRESUMO
BACKGROUND: The routine implementation of sternal precautions to prevent sternal complications that restrict the use of the upper limbs is currently worldwide practice following a median sternotomy. However, evidence is limited and drawn primarily from cadaver studies and orthopaedic research. Sternal precautions may delay recovery, prolong hospital discharge and be overly restrictive. Recent research has shown that upper limb exercise reduces post-operative sternal pain and results in minimal micromotion between the sternal edges as measured by ultrasound. The aims of this study are to evaluate the effects of modified sternal precautions on physical function, pain, recovery and health-related quality of life after cardiac surgery. METHODS/DESIGN: This study is a phase II, double-blind, randomised controlled trial with concealed allocation, blinding of patients and assessors, and intention-to-treat analysis. Patients (n = 72) will be recruited following cardiac surgery via a median sternotomy. Sample size calculations were based on the minimal important difference (two points) for the primary outcome: Short Physical Performance Battery. Thirty-six participants are required per group to counter dropout (20%). All participants will be randomised to receive either standard or modified sternal precautions. The intervention group will receive guidelines encouraging the safe use of the upper limbs. Secondary outcomes are upper limb function, pain, kinesiophobia and health-related quality of life. Descriptive statistics will be used to summarise data. The primary hypothesis will be examined by repeated-measures analysis of variance to evaluate the changes from baseline to 4 weeks post-operatively in the intervention arm compared with the usual-care arm. In all tests to be conducted, a p value <0.05 (two-tailed) will be considered statistically significant, and confidence intervals will be reported. DISCUSSION: The Sternal Management Accelerated Recovery Trial (S.M.A.R.T.) is a two-centre randomised controlled trial powered and designed to investigate whether the effects of modifying sternal precautions to include the safe use of the upper limbs and trunk impact patients' physical function and recovery following cardiac surgery via median sternotomy. TRIAL REGISTRATION: Australian and New Zealand Clinical Trials Registry identifier: ACTRN12615000968572 . Registered on 16 September 2015 (prospectively registered).
Assuntos
Procedimentos Cirúrgicos Cardíacos , Esternotomia , Extremidade Superior/fisiopatologia , Fenômenos Biomecânicos , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Protocolos Clínicos , Método Duplo-Cego , Humanos , Análise de Intenção de Tratamento , Tempo de Internação , Medição da Dor , Dor Pós-Operatória/diagnóstico , Dor Pós-Operatória/etiologia , Dor Pós-Operatória/prevenção & controle , Estudos Prospectivos , Qualidade de Vida , Recuperação de Função Fisiológica , Projetos de Pesquisa , Esternotomia/efeitos adversos , Inquéritos e Questionários , Fatores de Tempo , Resultado do Tratamento , VitóriaRESUMO
Many studies examining the food retail environment rely on geographic information system (GIS) databases for location information. The purpose of this study was to validate information provided by two GIS databases, comparing the positional accuracy of food service places within a 1 km circular buffer surrounding 34 schools in Ontario, Canada. A commercial database (InfoCanada) and an online database (Yellow Pages) provided the addresses of food service places. Actual locations were measured using a global positioning system (GPS) device. The InfoCanada and Yellow Pages GIS databases provided the locations for 973 and 675 food service places, respectively. Overall, 749 (77.1%) and 595 (88.2%) of these were located in the field. The online database had a higher proportion of food service places found in the field. The GIS locations of 25% of the food service places were located within approximately 15 m of their actual location, 50% were within 25 m, and 75% were within 50 m. This validation study provided a detailed assessment of errors in the measurement of the location of food service places in the two databases. The location information was more accurate for the online database, however, when matching criteria were more conservative, there were no observed differences in error between the databases.
Assuntos
Serviços de Alimentação , Sistemas de Informação Geográfica , Bases de Dados como Assunto , InternetRESUMO
West Nile virus (WNV) infection can be fatal to many bird species, including numerous raptors, though population- and ecosystem-level impacts following introduction of the virus to North America have been difficult to document. Raptors occupy a diverse array of habitats worldwide and are important to ecosystems for their role as opportunistic predators. We documented initial (primary) WNV infection and then regularly measured WNV-specific neutralizing antibody titers in 16 resident raptors of seven species, plus one turkey vulture. Most individuals were initially infected and seroconverted between July and September of 2003, though three birds remained seronegative until summer 2006. Many of these birds became clinically ill upon primary infection, with clinical signs ranging from loss of appetite to moderate neurological disease. Naturally induced WNV neutralizing antibody titers remained essentially unchanged in some birds, while eight individuals experienced secondary rises in titer presumably due to additional exposures at 1, 2, or 3 years following primary infection. No birds experienced clinical signs surrounding or following the time of secondary exposure, and therefore antibodies were considered protective. Results of this study have implications for transmission dynamics of WNV and health of raptor populations, as well as the interpretation of serologic data from free-ranging and captive birds. Antibodies in raptors surviving WNV may persist for multiple years and protect against potential adverse effects of subsequent exposures.