Influência do clima na ocorrência de dengue em um município brasileiro de tríplice fronteira / Influencia del clima sobre la incidencia del dengue en un municipio brasileño de la triple frontera / Influence of the weather on the occurrence of dengue in a triple-border brazilian municipality

RESUMO Objetivo analisar a evolução temporal da incidência da dengue e sua correlação com variáveis climáticas em Foz do Iguaçu, um município brasileiro de tríplice fronteira, no período de agosto de 2006 a julho de 2016 Método estudo descritivo e analítico, realizado em 2018. Foram utilizados dados secundários obtidos dos sistemas de informações em saúde. Utilizou-se análise temporal e foi aplicado teste de regressão linear simples para avaliar a correlação entre as taxas de incidência da dengue e as variáveis climáticas Resultados os anos epidêmicos representaram 60% do período estudado. Ocorreu correlação positiva da incidência de dengue com a média da umidade relativa do ar (r=0,276; p=0,025), média da temperatura (até dois meses antes r=0,288; p=0,014) e pluviosidade (até três meses antes r=0,308; p=0,008) Conclusão as variáveis climáticas identificadas com relação positiva podem subsidiar a previsão e controle da epidemia de dengue

RESUMEN Objetivo analizar la evolución en el tiempo de la incidencia del dengue y su correlación con variables climáticas en Foz do Iguaçu, un municipio brasileño de la triple frontera, durante el período de agosto de 2006 a julio de 2016 Método estudio descriptivo y analítico realizado en el año 2018. Se utilizaron datos secundarios obtenidos de los sistemas de datos de salud. Se empleó análisis temporal y se aplicó la prueba de regresión lineal simple para evaluar la correlación entre los índices de incidencia del dengue y las variables climáticas Resultados los años epidémicos representaron el 60% del período estudiado. Se registró una correlación positiva entre la incidencia del dengue y la humedad relativa del aire media (r=0,276; p=0,025), la temperatura media (hasta dos meses antes r=0,288; p=0,014) y la pluviosidad (hasta tres meses antes r=0,308; p=0,008) Conclusión las variables climáticas identificadas con una relación positiva pueden servir de soporte para predecir y controlar epidemias de dengue

ABSTRACT Objective to analyze the temporal evolution of the incidence of dengue and its correlation with climatic variables in Foz do Iguaçu, a triple-border Brazilian municipality, in the period from August 2006 to July 2016 Method a descriptive and analytical study conducted in 2018. Secondary data obtained from the health information systems were used. Time analysis was employed and a simple linear regression test was applied to assess the correlation between the dengue incidence rates and the climatic variables Results the epidemic years represented 60% of the period studied. There was a positive correlation between incidence of dengue and mean relative humidity in the air (r=0.276; p=0.025), mean temperature (up to two months before r=0.288; p=0.014) and pluviosity (up to three months before r=0.308; p=0.008) Conclusion the climatic variables identified as with a positive relationship can support prediction and control of the dengue epidemic

Intervenções não farmacológicas como medidas de enfrentamento à pandemia de Covid-19 em município de fronteira / Non-pharmaceutical interventions as measures to tackle Covid-19 pandemic in a border town

As intervenções não farmacológicas são medidas de Saúde Pública que visam reduzir a transmissão de determinada doença. Em Foz do Iguaçu, fronteira entre Brasil, Paraguai e Argentina, a medida foi implementada como barreiras sanitárias objetivando identificar cidadãos sintomáticos respiratórios suspeitos de infecção por Covid-19. Realizou-se a implementação de 17 barreiras sanitárias em pontos estratégicos do município. O processo de monitoramento transcorreu a partir da elaboração de um formulário na ferramenta gratuita Epicollect5, tendo como resultado final o Painel de Monitoramento das Barreiras Sanitárias elaborado na plataforma Google Data Studio. Os resultados foram o aprimoramento da gestão na utilização de ferramentas livres de informação, a identificação dos casos sintomáticos no ato da abordagem nas barreiras sanitárias e a observação do fluxo transfronteiriço nesta região. Conclui-se que a estratégia de implementação e monitoramento das barreiras sanitárias utilizada é qualificada para sistematização e análise das informações em ferramentas livres de análise de dados. (AU)

The non-pharmaceutical interventions are public health measures that aim to reduce disease transmission. At Foz do Iguaçu, border city between Brazil, Paraguay, and Argentina, were implemented community measures as NPIs that aim to identify people with respiratory diseases symptoms suspected of coronavirus infection. Seventeen community measures were implemented in city strategic points. The monitoring process was carried out after data collection with a form created in the free tool Epicollect5, resulting in a Community Measure Monitoring Report developed in the Google Data Studio platform. The results were the management improvement in the use of information free tools, symptomatic cases identification in the inquiry and the cross-border flow observation in this region. In conclusion, implementation and monitoring strategies used are qualified to data analysis and systematization community measures data using free tools for data analysis. (AU)

Malathion insecticide resistance in Aedes aegypti: laboratory conditions and in situ experimental approach through adult entomological surveillance.

OBJECTIVE: In Brazil, the most common method of controlling outbreaks of arbovirus is by the use of chemical sprays, which kill the insect vector, Aedes aegypti. The main objective of this study was to evaluate the resistance of Ae. aegypti to the insecticide, malathion, in situ. The location of this study was the municipality of Foz do Iguaçu, in the state of Paraná, Brazil. METHODS: Ultra-low-volume (ULV) fogging equipment was used, by vehicle, to apply the insecticide in situ, and mosquito populations after treatment were compared with those of control areas. The resistance of strains collected from the municipality was compared to the Rockefeller strain under laboratory conditions. RESULTS: We found 220 adult female specimens and 7423 eggs of Ae. aegypti in the areas subjected to UBV treatment, whereas 245 adult females and 10 557 eggs were found in the control areas. The UBV treatment area showed no significant difference compared to the control area, for all the indices. Mortality of the Rockefeller colony varied more quickly when there were slight variations in malathion concentration than the Foz do Iguaçu population.

OBJECTIF: Au Brésil, la méthode la plus courante de lutte contre les épidémies d'arbovirus consiste à utiliser des pulvérisations chimiques qui tuent l'insecte vecteur, Aedes aegypti. L'objectif principal de cette étude était d'évaluer la résistance de Ae. aegypti à l'insecticide, le malathion, in situ. Le lieu de cette étude était la municipalité de Foz do Iguaçu, dans l'état du Paraná, au Brésil. MÉTHODES: Un équipement de brumisation à très faible volume (ULV) a été utilisé, par véhicule, pour appliquer l'insecticide in situ et les populations de moustiques après le traitement ont été comparées à celles des zones témoins. La résistance des souches collectées dans la municipalité a été comparée à la souche Rockefeller dans des conditions de laboratoire. RÉSULTATS: Nous avons trouvé 220 spécimens femelles adultes et 7.423 œufs d'Ae. aegypti dans les zones soumises au traitement ULV, alors que 245 femelles adultes et 10.557 œufs ont été trouvés dans les zones témoins. La zone de traitement ULV n'a montré aucune différence significative par rapport à la zone témoin, pour tous les indices. La mortalité de la colonie de Rockefeller variait plus rapidement lorsqu'il y avait de légères variations dans la concentration de malathion que la population de Foz do Iguaçu.

Molecular Detection of Dengue Virus in Mosquitoes as an Early Indicator to Aid in the Prevention of Human Infection in Endemic Areas.

Human cases of dengue virus based on the National Dengue Control Plan were compared with the molecular detection of the dengue virus in trapped mosquitoes, verifying the prediction and efficacy potentials of vector control between the two methodologies in a city with three endemic frontiers. Molecular detection of dengue virus in trapped mosquitoes was significantly higher than in human cases (p = 0.0435). Thus, molecular detection could be used as an early indicator to help prevent more human cases of dengue.

Building Infestation Index for Aedes aegypti and occurrence of dengue fever in the municipality of Foz do Iguaçu, Paraná, Brazil, from 2001 to 2016.

INTRODUCTION: the Building Infestation Index (BII) uses the Rapid Assay of the Larval Index for Aedes aegypti (LIRAa) to express the relationship between positive and surveyed properties. We evaluated LIRAa and the relationship between the BII and climate variables for dengue cases in Foz do Iguaçu municipality, Paraná. METHODS: Spearman's correlations for mean precipitation, mean temperature, BII, and dengue cases (time lag). RESULTS: positive correlations between BII and cases, and mean temperature and cases at two months. Weak correlation between precipitation and cases at three months. CONCLUSIONS: LIRAa and climate variables correlate with dengue cases.

Building Infestation Index for Aedes aegypti and occurrence of dengue fever in the municipality of Foz do Iguaçu, Paraná, Brazil, from 2001 to 2016

Abstract INTRODUCTION: the Building Infestation Index (BII) uses the Rapid Assay of the Larval Index for Aedes aegypti (LIRAa) to express the relationship between positive and surveyed properties. We evaluated LIRAa and the relationship between the BII and climate variables for dengue cases in Foz do Iguaçu municipality, Paraná. METHODS: Spearman's correlations for mean precipitation, mean temperature, BII, and dengue cases (time lag). RESULTS: positive correlations between BII and cases, and mean temperature and cases at two months. Weak correlation between precipitation and cases at three months. CONCLUSIONS: LIRAa and climate variables correlate with dengue cases.