Uso do linkage para a melhoria da completude do SIM e do Sinasc nas capitais brasileiras

OBJETIVO: Analisar a contribuição do linkage entre os bancos de dados de nascidos vivos e óbitos infantis para a melhoria da completude das variáveis comuns ao Sistema de Informações sobre Mortalidade (SIM) e ao Sistema de Informação sobre Nascidos Vivos (Sinasc) nas capitais brasileiras no ano de 2012. MÉTODOS: Foram estudados 9.001 óbitos de menores de um ano registrados no SIM no ano de 2012 e 1.424.691 nascidos vivos em 2011 e 2012 contidos no Sinasc. As bases de dados foram relacionadas por meio do linkage em duas etapas – determinística e probabilística. Calculou-se o percentual de incompletude das variáveis comuns ao SIM e ao Sinasc antes e após o emprego da técnica. RESULTADOS: Foi possível relacionar 90,8% dos óbitos à sua respectiva declaração de nascido vivo, a maioria pareada deterministicamente. Constatou-se maior percentual de pares em Porto Alegre, Curitiba e Campo Grande. Nas capitais do Norte, a média de pares foi de 84,2%; no Sul, esse resultado chegou a 97,9%. As 11 variáveis comuns ao SIM e ao Sinasc apresentavam 11.278 campos incompletos cumulativamente, sendo possível recuperar 91,4% das informações após o emprego do linkage. Cinco variáveis apresentavam completude excelente no Sinasc em todas as capitais brasileiras e apenas uma no SIM antes do relacionamento. Após a aplicação dessa técnica, todas as 11 variáveis do Sinasc passaram ao status de excelência, enquanto o mesmo ocorreu em sete no SIM. A capital de nascimento associou-se significativamente ao componente do óbito na qualidade da informação. CONCLUSÕES: Apesar dos avanços na cobertura e qualidade do SIM e do Sinasc, ainda são identificados problemas de completude das variáveis, em especial no SIM. Nessa perspectiva, o emprego do linkage apresenta-se como estratégia para qualificação de informações importantes para análise das mortes infantis.OBJECTIVE: To analyze the contribution of linkage between databases of live births and infant mortality to improve the completeness of the variables common to the Mortality Information System (SIM) and the Live Birth Information System (SINASC) in Brazilian capitals in 2012. METHODS: We studied 9,001 deaths of children under one year registered in the SIM in 2012 and 1,424,691 live births present in the SINASC in 2011 and 2012. The databases were related with linkage in two steps – deterministic and probabilistic. We calculated the percentage of incompleteness of the variables common to the SIM and SINASC before and after using the technique. RESULTS: We could relate 90.8% of the deaths to their respective declarations of live birth, most of them paired deterministically. We found a higher percentage of pairs in Porto Alegre, Curitiba, and Campo Grande. In the capitals of the North region, the average of pairs was 84.2%; in the South region, this result reached 97.9%. The 11 variables common to the SIM and SINASC had 11,278 incomplete fields cumulatively, and we could recover 91.4% of the data after linkage. Before linkage, five variables presented excellent completeness in the SINASC in all Brazilian capitals, but only one variable had the same status in the SIM. After applying this technique, all 11 variables of the SINASC became excellent, while this occurred in seven variables of the SIM. The city of birth was significantly associated with the death component in the quality of the information. CONCLUSIONS: Despite advances in the coverage and quality of the SIM and SINASC, problems in the completeness of the variables can still be identified, especially in the SIM. In this perspective, linkage can be used to qualify important information for the analysis of infant mortality

Análisis de la distribución espacial de los accidentes de transporte terrestre atendidos por el Servicio Móvil de Urgencia (SAMU-192), en un municipio de la región nordeste de Brasil

This study describes the epidemiological characteristics of road accident victims attended by the Brazilian Mobile Emergency Service (SAMU-192) and located in the areas of highest accident density in the municipality of Olinda, (Pernambuco, Brazil). Kernel density estimation was used to detect spatial agglomerations of accidents. In 2015, 724 accidents occurred; of these, 73.48% of the victims were males aged 20- 39 years. There was a predominance of accidents involving motorcycles (54.97%). Accident clusters were detected in the main traffic corridors, with run-over accidents located near bus terminals. Spatial analysis proved to be a relevant instrument for the identification of accident clusters and the application of effective prevention and traffic safety improvement measures.Se describen las características epidemiológicas de las víctimas de accidentes de transporte terrestre atendidas por el Servicio Móvil de Urgencia (SAMU-192) y se localizan las áreas de mayor densidad de accidentes en el municipio de Olinda (Pernambuco, Brasil). Se empleó la estimación de densidad kernel para la detección de aglomerados espaciales de accidentes. En 2015 se registraron 724 accidentes. El 73,48% de las personas afectadas fueron del sexo masculino, y de entre 20 y 39 años de edad. Hubo un predominio de los accidentes con motocicletas (54,97%). Los aglomerados de accidentes se localizaron en las principales vías de tránsito y, los atropellamientos, cercanos a las terminales de ómnibus. El análisis espacial se mostró como un instrumento relevante para la identificación de los aglomerados de accidentes y una aplicación eficaz de las medidas de prevención y la mejora en la seguridad del tránsito vehicula

Use of linkage to improve the completeness of the SIM and SINASC in the Brazilian capitals

<div><p>ABSTRACT OBJECTIVE To analyze the contribution of linkage between databases of live births and infant mortality to improve the completeness of the variables common to the Mortality Information System (SIM) and the Live Birth Information System (SINASC) in Brazilian capitals in 2012. METHODS We studied 9,001 deaths of children under one year registered in the SIM in 2012 and 1,424,691 live births present in the SINASC in 2011 and 2012. The databases were related with linkage in two steps – deterministic and probabilistic. We calculated the percentage of incompleteness of the variables common to the SIM and SINASC before and after using the technique. RESULTS We could relate 90.8% of the deaths to their respective declarations of live birth, most of them paired deterministically. We found a higher percentage of pairs in Porto Alegre, Curitiba, and Campo Grande. In the capitals of the North region, the average of pairs was 84.2%; in the South region, this result reached 97.9%. The 11 variables common to the SIM and SINASC had 11,278 incomplete fields cumulatively, and we could recover 91.4% of the data after linkage. Before linkage, five variables presented excellent completeness in the SINASC in all Brazilian capitals, but only one variable had the same status in the SIM. After applying this technique, all 11 variables of the SINASC became excellent, while this occurred in seven variables of the SIM. The city of birth was significantly associated with the death component in the quality of the information. CONCLUSIONS Despite advances in the coverage and quality of the SIM and SINASC, problems in the completeness of the variables can still be identified, especially in the SIM. In this perspective, linkage can be used to qualify important information for the analysis of infant mortality.</p></div

Canine visceral leishmaniasis biomarkers and their employment in vaccines.

The natural history of canine visceral leishmaniasis (CVL) has been well described, particularly with respect to the parasite load in different tissues and immunopathological changes according to the progression of clinical forms. The biomarkers evaluated in these studies provide support for the improvement of the tools used in developing vaccines against CVL. Thus, we describe the major studies using the dog model that supplies the rationale for including different biomarkers (tissue parasitism, histopathology, hematological changes, leucocytes immunophenotyping, cytokines patterns, and in vitro co-culture systems using purified T-cells subsets and macrophages infected with L. infantum) for immunogenicity and protection evaluations in phases I and II applied to pre-clinical and clinical vaccine trials against CVL. The search for biomarkers related to resistance or susceptibility has revealed a mixed cytokine profile with a prominent proinflammatory immune response as relevant for Leishmania replication at low levels as observed in asymptomatic dogs (highlighted by high levels of IFN-? and TNF-? and decreased levels in IL-4, TGF-? and IL-10). Furthermore, increased levels in CD4+ and CD8+ T-cell subsets, presenting intracytoplasmic proinflammatory cytokine balance, have been associated with a resistance profile against CVL. In contrast, a polyclonal B-cell expansion towards plasma cell differentiation contributes to high antibody production, which is the hallmark of symptomatic dogs associated with high susceptibility in CVL. Finally, the different studies used to analyze biomarkers have been incorporated into vaccine immunogenicity and protection evaluations. Those biomarkers identified as resistance or susceptibility markers in CVL have been used to evaluate the vaccine performance against L. infantum in a kennel trial conducted before the field trial in an area known to be endemic for visceral leishmaniasis. This rationale has been a guiding force in the testing and selection of the best vaccine candidates against CVL and provides a way for the veterinary industry to register commercial immunobiological products