Spatial analysis of American cutaneous leishmaniasis in the state of Amazonas.

OBJECTIVE: To evaluate, using spatial analysis, the occurrence of American Cutaneous Leishmaniasis (ACL) and analyze its association with the municipal human development index (MHDI) and deforestation in the state of Amazonas, Brazil, from 2016 to 2020. METHODS: This ecological study, carried out from January 2016 to December 2020, included the 62 municipalities of the state of Amazonas. The incidence rate of ACL was determined in space and time. Using Multiple Linear Regression by Ordinary Least Squares (OLS) and Spatial Autoregressive Regression (SAR) models, the relationship between incidence rates and Human Development Index (HDI) and deforestation was analyzed., The high- and low-risk clusters were identified by employing the Getis-Ord Gi* statistic. RESULTS: A total of 7,499 cases of ACL were registered in all 62 municipalities in the state. Most cases were in male (n=5,924; 79.24%), with the greatest frequency in the population aged from 20 to 39 years (n=3,356; 44.7%). The incidence rate in the state of Amazonas was 7.34 cases per 100,000 inhabitants-year, with the municipalities of Rio Preto da Eva and Presidente Figueiredo showing the highest rates (1,377.5 and 817.5 cases per 100,000 population-year, respectively). The ACL cases were clustered into specific areas related to those municipalities with the highest incidence rates. The SAR model revealed a positive relationship between ACL and deforestation. CONCLUSIONS: The occurrence of ACL was evident in a variety of patterns in the state of Amazonas; the high incidence rates and persistence of this disease in this state were linked to deforestation. The temporal distribution showed variations in the incidence rates during each year. Our results can help optimize the measures needed to prevent and control this disease in the state.

Cryptic circulation of chikungunya virus in São Jose do Rio Preto, Brazil, 2015-2019.

BACKGROUND: Chikungunya virus (CHIKV) has spread across Brazil with varying incidence rates depending on the affected areas. Due to cocirculation of arboviruses and overlapping disease symptoms, CHIKV infection may be underdiagnosed. To understand the lack of CHIKV epidemics in São José do Rio Preto (SJdRP), São Paulo (SP), Brazil, we evaluated viral circulation by investigating anti-CHIKV IgG seroconversion in a prospective study of asymptomatic individuals and detecting anti-CHIKV IgM in individuals suspected of dengue infection, as well as CHIKV presence in Aedes mosquitoes. The opportunity to assess two different groups (symptomatic and asymptomatic) exposed at the same geographic region aimed to broaden the possibility of identifying the viral circulation, which had been previously considered absent. METHODOLOGY/PRINCIPAL FINDINGS: Based on a prospective population study model and demographic characteristics (sex and age), we analyzed the anti-CHIKV IgG seroconversion rate in 341 subjects by ELISA over four years. The seroprevalence increased from 0.35% in the first year to 2.3% after 3 years of follow-up. Additionally, we investigated 497 samples from a blood panel collected from dengue-suspected individuals during the 2019 dengue outbreak in SJdRP. In total, 4.4% were positive for anti-CHIKV IgM, and 8.6% were positive for IgG. To exclude alphavirus cross-reactivity, we evaluated the presence of anti-Mayaro virus (MAYV) IgG by ELISA, and the positivity rate was 0.3% in the population study and 0.8% in the blood panel samples. In CHIKV and MAYV plaque reduction neutralization tests (PRNTs), the positivity rate for CHIKV-neutralizing antibodies in these ELISA-positive samples was 46.7%, while no MAYV-neutralizing antibodies were detected. Genomic sequencing and phylogenetic analysis revealed CHIKV genotype ECSA in São José do Rio Preto, SP. Finally, mosquitoes collected to complement human surveillance revealed CHIKV positivity of 2.76% of A. aegypti and 9.09% of A. albopictus (although it was far less abundant than A. aegypti) by RT-qPCR. CONCLUSIONS/SIGNIFICANCE: Our data suggest cryptic CHIKV circulation in SJdRP detected by continual active surveillance. These low levels, but increasing, of viral circulation highlight the possibility of CHIKV outbreaks, as there is a large naïve population. Improved knowledge of the epidemiological situation might aid in outbreaks prevention.

Temporal trend and epidemiological profile of accidents involving venomous animals in Brazil, 2007-2019. / Tendência temporal e perfil epidemiológico dos acidentes por animais peçonhentos no Brasil, 2007-2019.

OBJECTIVE: to analyze the temporal trend of accidents involving venomous animals in Brazil from 2007 to 2019. METHODS: this was a cross-sectional study carried out with data from the Notifiable Health Conditions Information System (SINAN). Prais-Winsten linear regression was used for the temporal analysis. We calculated incidence rates according to sex and age group, relative risk and case fatality ratio. RESULTS: during the study period there were 2,102,657 cases of accidents involving venomous animals. With the exception of snakebite, the remaining accidents showed a rising temporal trend in most regions of the country. Scorpion stings, snake bites and spider bites were responsible for 86% of accidents, mainly affecting male people of working age. Accidents involving snakes (0.4%) and bees (0.3%) had the highest case fatality ratios. Children were the main victims of accidents involving bees, caterpillars and "others". CONCLUSION: accidents involving venomous animals showed a rising temporal trend for most conditions, as well as different epidemiological profiles.

Temporal trend and epidemiological profile of accidents by venomous animals in Brazil, 2007-2019 / Tendencia temporal y perfil epidemiológico de los accidentes por animales venenosos en Brasil, 2007-2019 / Tendência temporal e perfil epidemiológico dos acidentes por animais peçonhentos no Brasil, 2007-2019

Objective: To analyze the temporal trend of accidents by venomous animals in Brazil from 2007 to 2019. Methods: Cross-sectional study carried out with data from the Notifiable Diseases Information System ­ Sinan. For the temporal analysis, the Prais-Wistein Linear Regression was used. The incidences by sex and age group, relative risk and lethality were calculated. Results: During the study period there were 2,102,657 cases of accidents by venomous animals. With the exception of snakebite, the other accidents showed an increasing temporal trend in most regions of the country. Scorpionism, snakebite and spider bites were responsible for 86% of accidents, mainly affecting men of working age. Snake (0.4%) and beetle (0.3%) accidents were the most lethal. Children were the main victims of accidents by bees, caterpillars and 'others'. Conclusion: Accidents by venomous animals showed an increasing temporal trend for most diseases and different epidemiological profiles.

Objetivo: Analizar la tendencia temporal de los accidentes por animales ponzoñosos en Brasil de 2007 a 2019. Métodos: Estudio transversal realizado con datos del Sistema de Información de Enfermedades de Declaración Obligatoria ­ Sinan. Para el análisis temporal se utilizó la Regresión Lineal de Prais-Wistein. Se calcularon las incidencias por sexo y grupo de edad, riesgo relativo y letalidad. Resultados: Durante el período de estudio hubo 2.102.657 casos de accidentes por animales ponzoñosos. Con excepción de la mordedura de serpiente, los demás accidentes mostraron una tendencia temporal creciente en la mayoría de las regiones del país. El escorpionismo (51,2%), la mordedura de serpiente (17,4%) y la mordedura de araña (17,3%) fueron responsables del 86% de los accidentes, afectando principalmente a hombres en edad laboral. Conclusión: Los accidentes por animales venenosos mostraron una tendencia temporal creciente para la mayoría de las enfermedades y diferentes perfiles epidemiológicos.

Objetivo: Analisar a tendência temporal dos acidentes causados por animais peçonhentos no Brasil, de 2007 a 2019. Métodos: Estudo transversal, realizado com dados do Sistema de Informação de Agravos de Notificação ­ Sinan. Para a análise temporal, utilizou-se a regressão linear de Prais-Wistein. Foram calculadas as incidências por sexo e faixa etária, risco relativo e letalidade. Resultados: No período de estudo, houve 2.102.657 casos de acidentes por animais peçonhentos. Com exceção do ofidismo, os demais acidentes apresentaram tendência temporal crescente na maioria das macrorregiões nacionais. Escorpionismo, ofidismo e araneísmo foram responsáveis por 86% dos acidentes, principalmente entre homens em idade economicamente ativa. As taxas de letalidade mais elevadas foram por acidentes ofídicos (0,4%) e apílicos (0,3%). As crianças foram as principais vítimas de acidentes com abelhas, lagartas e 'outros'. Conclusão: Os acidentes com animais peçonhentos apresentaram tendência temporal crescente para a maioria dos agravos e diferentes perfis epidemiológicos.

Tendência temporal e perfil epidemiológico dos acidentes por animais peçonhentos no Brasil, 2007-2019 / Tendencia temporal y perfil epidemiológico de los accidentes por animales venenosos en Brasil, 2007-2019 / Temporal trend and epidemiological profile of accidents involving venomous animals in Brazil, 2007-2019

Objetivo: Analisar a tendência temporal dos acidentes causados por animais peçonhentos no Brasil, de 2007 a 2019. Métodos: Estudo transversal, realizado com dados do Sistema de Informação de Agravos de Notificação (Sinan). Para a análise temporal, utilizou-se a regressão linear de Prais-Winsten. Foram calculadas as incidências por sexo e faixa etária, risco relativo e letalidade. Resultados: No período de estudo, houve 2.102.657 casos de acidentes por animais peçonhentos. Com exceção do ofidismo, os demais acidentes apresentaram tendência temporal crescente na maioria das macrorregiões nacionais. Escorpionismo, ofidismo e araneísmo foram responsáveis por 86% dos acidentes, principalmente entre pessoas do sexo masculino em idade economicamente ativa. A de letalidade foi mais elevada para acidentes ofídicos (0,4%) e apílicos (0,3%). As crianças foram as principais vítimas de acidentes com abelhas, lagartas e "outros". Conclusão: Os acidentes com animais peçonhentos apresentaram tendência temporal crescente para a maioria dos agravos e diferentes perfis epidemiológicos.

Objetivo: Analizar la tendencia temporal de los accidentes con animales ponzoñosos en Brasil de 2007 a 2019. Métodos: Estudio transversal realizado con datos del Sistema de Información de Enfermedades de Declaración Obligatoria (Sinan). Para el análisis temporal se utilizó la Regresión Lineal de Prais-Wisten. Se calcularon las incidencias por sexo y grupo de edad, riesgo relativo y letalidad. Resultados: Durante el período del estudio hubo 2.102.657 casos de accidentes con animales ponzoñosos. Con excepción de la mordedura de serpiente, los demás accidentes mostraron una tendencia temporal creciente en la mayoría de las regiones del país. El escorpionismo, la mordedura de serpiente y la picadura de araña fueron responsables del 86% de los accidentes, afectando principalmente a personas del sexo masculino en edad laboral. Las tasas de letalidad más altas fueron por accidentes de mordedura de serpiente (0,4%) y picadura de araña (0,3%). Los niños fueron las principales vitimas de los acidentes con abejas, lagartas y "otros". Conclusión: Los accidentes com animales ponzoñosos mostraron una tendencia temporal creciente para la mayoría de las enfermedades y diferentes perfiles epidemiológicos.

Objective: to analyze the temporal trend of accidents involving venomous animals in Brazil from 2007 to 2019. Methods: this was a cross-sectional study carried out with data from the Notifiable Health Conditions Information System (SINAN). Prais-Winsten linear regression was used for the temporal analysis. We calculated incidence rates according to sex and age group, relative risk and case fatality ratio. Results: during the study period there were 2,102,657 cases of accidents involving venomous animals. With the exception of snakebite, the remaining accidents showed a rising temporal trend in most regions of the country. Scorpion stings, snake bites and spider bites were responsible for 86% of accidents, mainly affecting male people of working age. Accidents involving snakes (0.4%) and bees (0.3%) had the highest case fatality ratios. Children were the main victims of accidents involving bees, caterpillars and "others". Conclusion: accidents involving venomous animals showed a rising temporal trend for most conditions, as well as different epidemiological profiles.

Incidence and mortality risk for respiratory tract cancer in the city of São Paulo, Brazil: Bayesian analysis of the association with traffic density.

BACKGROUND: There is evidence that exposure to traffic-related air pollution is related to the incidence of and mortality associated with lung cancer. The aim of this study was to perform a spatial analysis, with a Bayesian approach, to test the hypothesis that high traffic density is associated with increased respiratory tract cancer incidence and mortality risk among individuals over 20 years of age residing in the city of São Paulo, Brazil. METHODS: We employed data from two different databases: the São Paulo Municipal Population-Based Cancer Registry (2002-2011 cancer incidence data); and the Mortality Database of the São Paulo Municipal Health Department (2002-2013 cancer mortality data). The relationships between the number of cases of respiratory tract cancer in each area analyzed and the standardized covariates-traffic density and the Municipal Human Development Index (MHDI)-were evaluated with a Besag-York-Mollié ecological model with relative risks (RRs) estimates. RESULTS: Per 1-unit standard-deviation increase in traffic density and in the MHDI, the RR for respiratory tract cancer incidence was 1.07 (95% CI: 1.02-1.13) and 1.25 (95% CI: 1.18-1.32), respectively, whereas the RR for mortality was 1.04 (95% CI: 0.99-1.09) and 1.23 (95% CI: 1.16-1.30), respectively. CONCLUSION: Our findings support the hypothesis that residing in areas with high traffic density is associated with increased respiratory tract cancer incidence and mortality risk in the city of São Paulo.

Integrated health service delivery networks and tuberculosis avoidable hospitalizations: is there a relation between them in Brazil?

BACKGROUND: The early identification of the Breathing Symptoms within the scope of Primary Health Care is recommended, and is also one of the strategies of national sanitary authorities for reaching the elimination of tuberculosis. The purpose of this study is to consider which attributes and which territories have shown the most significant progress in Primary Health Care, in terms of coordination of Health Care Networks, and also check if those areas of Primary Health Care that are most critical regarding coordination, there were more or less cases of avoidable hospitalizations for tuberculosis. METHODS: This is an ecological study that uses primary and secondary data. For analysis, coropletic maps were developed through the ArcGIS software, version 10.2. There was also the calculation of gross annual and Bayesian rates for hospitalizations for tuberculosis, for each Primary Health Care territory. RESULTS: There were satisfactory results for attributes such as Population (n = 37; 80.4 %), Primary Health Care (n = 43; 93.5 %), Support System (n = 45; 97.8 %); the exceptions were Logistics System (n = 32; 76.0 %) and Governance System, with fewer units in good condition (n = 31; 67.3 %). There is no evidence of any connection between networks' coordination by Primary Health Care and tuberculosis avoidable admissions. CONCLUSION: The results show that progress has been made regarding the coordination of the Health Care Networks, and a positive trend has been shown, even though the levels are not excellent. It was found no relationship between the critical areas of Primary Health Care and tuberculosis avoidable hospitalizations, possibly because other variables necessary to comprehend the phenomena.

Avaliação de concordância entre diagnósticos clínicos e relatórios finais de autópsias em hospital universitário / Concordance evaluation between clinical diagnoses and final autopsy

O estudo teve como objetivo analisar a concordância de diagnósticos clínicos e atestados de óbitos comparados aos relatórios finais de autópsia. A pesquisa foi elaborada utilizando-se casos autopsiados maiores de 1 ano, apresentando diagnóstico da causa básica de morte, ocorridos em hospital universitário entre 1993 e 1995. Na análise de concordância foram aplicados os métodos estatísticos de qui-quadrado (c2), regressão logística multivariada e coeficiente kappa. A percentagem de autópsias em óbitos foi de 5,6. O principal motivo de solicitação para autópsias foi confirmação diagnóstica. A concordância dos diagnósticos clínicos e relatórios finais foi igual a 0,537 (IC 95 0,451 a 0,622), tendo sido influenciado pela alta concordância entre autópsias solicitadas para pesquisa. Entre atestados do óbito e relatórios finais obteve-se concordância igual a 0,651 (IC 95 0,510 a 0,792). Constatou-se baixa percentagem de autópsias no período de estudo para um hospital-escola. Os níveis de concordância entre diagnósticos obtidos mostram que a autópsia continua sendo importante para o diagnóstico correto da causa de óbito.