ABSTRACT Objective: To analyze the transmission dynamics of dengue, a public health problem in Brazil and the Metropolitan Region of Belo Horizonte (MRBH). Methods: The spatiotemporal evolution of the occurrence of dengue in the municipality of Contagem, state of Minas Gerais, a region with high arbovirus transmission, was analyzed. Furthermore, epidemic and non-epidemic periods were analyzed, based on probable cases of dengue. This is an ecological study that used the Notifiable Diseases Information System (SINAN) national database. The analyses were carried out considering the period from epidemiological week (EW) 40 of 2011 to 39 of 2017. Spatial analysis tools (crude and smoothed incidence rate, directional distribution ellipse, global Moran index and local Moran index, and spatial scanning time with definition of epidemiological risk) were used. Results: The 2012 to 2013 and 2015 to 2016 epidemic cycles presented high incidence rates. The disease was concentrated in more urbanized areas, with a small increase in cases throughout the municipality. Seven statistically significant local clusters and areas with a high rate of cases and accentuated transmission in epidemic cycles were observed throughout the municipality. Spatial autocorrelation of the incidence rate was observed in all periods. Conclusion: The results of the present study highlight a significant and heterogeneous increase in dengue notifications in Contagem over the years, revealing distinct spatial patterns during epidemic and non-epidemic periods. Geoprocessing analysis identified high-risk areas, a piece of knowledge that can optimize the allocation of resources in the prevention and treatment of the disease for that municipality.

RESUMO Objetivo: Analisar a dinâmica de transmissão da dengue, problema de saúde pública no Brasil e Região Metropolitana de Belo Horizonte (RMBH). Métodos: Foi analisada a evolução espaçotemporal da ocorrência de dengue no município de Contagem, estado de Minas Gerais, região de alta transmissão da arbovirose. Ainda, foram analisados períodos epidêmicos e não epidêmicos, com base em casos prováveis de dengue. Trata-se de um estudo ecológico que utilizou o banco de dados nacional do Sistema de Informação de Agravos de Notificação (SINAN). As análises foram realizadas considerando-se o período compreendido da semana epidemiológica 40 de 2011 a 39 de 2017. Ferramentas de análise espacial (taxa de incidência bruta e suavizada, elipse de distribuição direcional, índice de Moran global e índice de Moran local, e varredura espaçotemporal com definição do risco epidemiológico) foram utilizadas. Resultados: Os ciclos epidêmicos 2012 a 2013 e 2015 a 2016 apresentaram altas taxas de incidência. A doença concentrou-se em áreas mais urbanizadas, com pequena expansão de casos por todo o município. Foram observados sete aglomerados locais estatisticamente significativos e áreas com alta taxa de casos e transmissão acentuada em ciclos epidêmicos em todo o município. A autocorrelação espacial da taxa de incidência foi observada em todos os períodos. Conclusão: Os resultados do presente estudo destacam um aumento significativo e heterogêneo nas notificações de dengue em Contagem ao longo dos anos, revelando padrões espaciais distintos durante períodos epidêmicos e não epidêmicos. A análise de geoprocessamento identificou áreas de alto risco, conhecimento este que pode otimizar a alocação de recursos na prevenção e tratamento da doença para o referido município.

RESUMO Objetivo: Analisar a dinâmica de transmissão da dengue, problema de saúde pública no Brasil e Região Metropolitana de Belo Horizonte (RMBH). Métodos: Foi analisada a evolução espaçotemporal da ocorrência de dengue no município de Contagem, estado de Minas Gerais, região de alta transmissão da arbovirose. Ainda, foram analisados períodos epidêmicos e não epidêmicos, com base em casos prováveis de dengue. Trata-se de um estudo ecológico que utilizou o banco de dados nacional do Sistema de Informação de Agravos de Notificação (SINAN). As análises foram realizadas considerando-se o período compreendido da semana epidemiológica 40 de 2011 a 39 de 2017. Ferramentas de análise espacial (taxa de incidência bruta e suavizada, elipse de distribuição direcional, índice de Moran global e índice de Moran local, e varredura espaçotemporal com definição do risco epidemiológico) foram utilizadas. Resultados: Os ciclos epidêmicos 2012 a 2013 e 2015 a 2016 apresentaram altas taxas de incidência. A doença concentrou-se em áreas mais urbanizadas, com pequena expansão de casos por todo o município. Foram observados sete aglomerados locais estatisticamente significativos e áreas com alta taxa de casos e transmissão acentuada em ciclos epidêmicos em todo o município. A autocorrelação espacial da taxa de incidência foi observada em todos os períodos. Conclusão: Os resultados do presente estudo destacam um aumento significativo e heterogêneo nas notificações de dengue em Contagem ao longo dos anos, revelando padrões espaciais distintos durante períodos epidêmicos e não epidêmicos. A análise de geoprocessamento identificou áreas de alto risco, conhecimento este que pode otimizar a alocação de recursos na prevenção e tratamento da doença para o referido município. Objetivo RMBH. RMBH . (RMBH) Métodos Gerais arbovirose Ainda Tratase Trata se SINAN. SINAN (SINAN) considerandose considerando 4 201 3 2017 suavizada direcional local epidemiológico utilizadas Resultados concentrouse concentrou urbanizadas Conclusão anos (RMBH (SINAN 20 2

ABSTRACT Objective: To analyze the transmission dynamics of dengue, a public health problem in Brazil and the Metropolitan Region of Belo Horizonte (MRBH). Methods: The spatiotemporal evolution of the occurrence of dengue in the municipality of Contagem, state of Minas Gerais, a region with high arbovirus transmission, was analyzed. Furthermore, epidemic and non-epidemic periods were analyzed, based on probable cases of dengue. This is an ecological study that used the Notifiable Diseases Information System (SINAN) national database. The analyses were carried out considering the period from epidemiological week (EW) 40 of 2011 to 39 of 2017. Spatial analysis tools (crude and smoothed incidence rate, directional distribution ellipse, global Moran index and local Moran index, and spatial scanning time with definition of epidemiological risk) were used. Results: The 2012 to 2013 and 2015 to 2016 epidemic cycles presented high incidence rates. The disease was concentrated in more urbanized areas, with a small increase in cases throughout the municipality. Seven statistically significant local clusters and areas with a high rate of cases and accentuated transmission in epidemic cycles were observed throughout the municipality. Spatial autocorrelation of the incidence rate was observed in all periods. Conclusion: The results of the present study highlight a significant and heterogeneous increase in dengue notifications in Contagem over the years, revealing distinct spatial patterns during epidemic and non-epidemic periods. Geoprocessing analysis identified high-risk areas, a piece of knowledge that can optimize the allocation of resources in the prevention and treatment of the disease for that municipality. Objective MRBH. MRBH . (MRBH) Methods Gerais analyzed Furthermore nonepidemic non SINAN (SINAN database EW (EW 4 201 3 2017 crude ellipse risk Results rates Conclusion years highrisk (MRBH 20 2

ABSTRACT Background: In 1970, Brazil implemented the Schistosomiasis Control Program (PCE, Portuguese acronym for Programa de Controle da Esquistossomose) was implemented in Brazil, where, through successive treatment interventions, the epidemiology and transmission of schistosomiasis have changed significantly over time. This study aimed to evaluate the PCE’s effectiveness by critically analyzing the disease notification system. Methods: An ecological study was conducted using data on reported schistosomiasis cases in Brazil between 2007 and 2020. Results: The highest number of municipalities actively participating in the PCE was 750, recorded in 2007. Conversely, participation reached its lowest point in 2020, with only 259 municipalities involved. Over the past decade, there has been a drastic decline in the number of municipalities with active schistosomiasis control programs. During the same period, there was an observed increase in the number of deaths caused by schistosomiasis, while the number of reported cases decreased. This suggests an inverse correlation. Conclusions: The present data suggest that schistosomiasis cases are not correctly diagnosed or reported, reflecting a twisted image of the magnitude of this public health problem in Brazil. Background 1970 PCE, (PCE Esquistossomose where interventions time PCEs s system Methods 200 2020 Results 750 Conversely 25 involved decade programs period decreased correlation Conclusions 197 20 202 75 2 19 7 1

ABSTRACT Objective To analyze the space-time aspects and epidemiological characteristics of leishmaniasis in Colombia from 2008 to 2016. Methodology This was an cross-sectional and ecological study of the morbidity and mortality from leishmaniasis and its spatial, temporal, and socio-demographic associated factors based on reported cases of ACL and VL obtained from the National Public Health Surveillance System (Sivigila) of the Ministry of Health of Colombia. Results In all, 99,503 cases of leishmaniasis were reported in Colombia in the 9-year period (2008-2016), where ACL accounted for 99.78% of the cases, with 14 deaths, and VL accounted for 0.21% of the cases, with four deaths. People living in the rural areas were the most affected by both forms of leishmaniasis. In the spatial analysis, ACL was widely distributed in Colombian territory, but the patterns of occurrence were not consistent throughout the study period. Further, the majority of the population affec-ted by VL resided in the Caribbean and Central regions, during the second three-year study period, indicating dispersion of the disease. Conclusions The recent epidemiological patterns of leishmaniasis show variations in morbidity and mortality, with a higher incidence of ACL than of VL and high concentration of cases in certain regions of Colombia. This study contributes to a better unders-tanding of this important public health problem so that measures to control the spread of this disease in Colombia can be intensified.

RESUMEN Objetivo Analizar los aspectos espaciotemporales y las características epidemiológicas de la leishmaniasis en Colombia de 2008 a 2016. Metodología Se trata de un estudio transversal y ecológico de la morbilidad y mortalidad por leishmaniasis y sus factores espaciales, temporales y sociodemográficos asociados, con base en casos reportados de LCA y LV obtenidos del Sistema Nacional de Vigilancia en Salud Pública (Sivigila) del Ministerio de Salud de Colombia. Resultados En total, se notificaron 99 503 casos de leishmaniasis en Colombia en el periodo de 9 años (2008-2016), donde el LCA representó el 99,78% de los casos, con 14 defunciones, y la LV representó el 0,21% de los casos, con cuatro fallecidos. Las personas que viven en las zonas rurales fueron las más afectadas por ambas formas de leishmaniasis. En el análisis espacial, el LCA se distribuyó ampliamente en el territorio colombiano, pero los patrones de ocurrencia no fueron consistentes a lo largo del periodo de estudio. Además, la mayoría de la población afectada por LV residió en las regiones del Caribe y Centro, durante el segundo periodo de estudio de tres años, lo que indica la dispersión de la enfermedad. Conclusiones Los patrones epidemiológicos recientes de la leishmaniasis muestran variaciones en la morbimortali-dad, con mayor incidencia de LCA que de LV y alta concentración de casos en algunas regiones de Colombia. Este estudio contribuye a una mejor comprensión de este importante problema de salud pública para que se puedan intensificar las medidas para controlar la propagación de esta enfermedad en Colombia.

Resumo Introdução A pediculose de cabeça é uma parasitose considerada um sério problema de saúde pública, afetando principalmente países com recursos limitados. Objetivo Descrever os aspectos epidemiológicos da pediculose de cabeça em Minas Gerais, Brasil. Método Revisão sistemática conduzida por meio dos padrões estabelecidos pelo Preferred Reporting Items in Systematic Reviews and Metanalyses (PRISMA). Foram pesquisadas as bases de dados PubMed, LILACS e SciELO, bem como a literatura cinza. Resultados Nove de 1.167 estudos foram incluídos, publicados entre 1988 e 2019. Relatou-se uma prevalência total da parasitose que variou de 1,4% a 57,4%. Ela variou de 0,0% a 66,7% para homens e 2,3% a 57,4% para mulheres, sendo maior em pessoas de cor negra (1,4% a 40,3%). Em relação à idade, a maior prevalência foi de 10 a 12 anos (45,3%). Quanto às características dos cabelos, houve maior infestação em pessoas com cabelos longos (16,0% a 79,5%), ondulados (0,0% a 44,7%), escuros (0,0% a 36,6%), com baixa densidade capilar (35,4%) e fios grossos (39,2%). Conclusão A pediculose atinge ambos os sexos, diferentes idades e raças, representando um importante problema de saúde em Minas Gerais, não só pela presença do ectoparasita, mas também pelas complicações secundárias que podem ser geradas desse parasitismo. pública limitados Gerais Brasil PRISMA. PRISMA . (PRISMA) PubMed SciELO cinza 1167 1 167 1.16 incluídos 198 2019 Relatouse Relatou se 14 4 1,4 574 57 00 0 0,0 667 66 7 66,7 23 2 3 2,3 57,4 mulheres (1,4 40,3%. 403 40,3% 40 40,3%) idade 45,3%. 453 45,3% 45 (45,3%) 16,0% 160 16 (16,0 79,5%, 795 79,5% , 79 5 79,5%) (0,0 44,7%, 447 44,7% 44 44,7%) 36,6%, 366 36,6% 36 6 36,6%) 35,4% 354 35 (35,4% 39,2%. 392 39,2% 39 (39,2%) sexos raças ectoparasita parasitismo (PRISMA 116 1.1 19 201 1, 0, 66, 2, 57, (1, 40,3 45,3 (45,3% 16,0 (16, 79,5 (0, 44,7 36,6 35,4 (35,4 39,2 (39,2% 11 1. 20 (1 40, 45, (45,3 16, (16 79, (0 44, 36, 35, (35, 39, (39,2 ( (45, (35 (39, (45 (3 (39 (4

Abstract Background Head lice, or head pediculosis, is a parasitosis considered a serious public health problem that affects mainly resource-limited countries. Objective To describe epidemiological aspects of the pediculosis capitis in Minas Gerais, in Brazil. Method This systematic review was conducted through the standards established by the Preferred Reporting Items in Systematic Reviews and Metanalyses (PRISMA). PubMed, LILACS, and SciELO databases, as well as the gray literature, were searched. Results Nine of 1,167 studies were included, published between 1988 and 2019. These studies reported a total prevalence of parasitosis that ranged from 1.4% to 57.4%. The prevalence of head lice ranged from 0.0% to 66.7% for males and 2.3% to 57.4% for females, thus being higher in black-skinned people (1.4% to 40.3%). Regarding age, the highest prevalence was 10-12 years old (45.3%). As for the characteristics of the hair, there was a greater infestation in people with long (16.0% to 79.5%), wavy (0.0% to 44.7%), dark (0.0% to 36.6%), with low capillary density (35.4%), and thick hair (39.2%). Conclusion Head pediculosis affects both sexes, different ages, and races, representing an important health problem in Minas Gerais, not only due to the presence of ectoparasite but also to the secondary complications that can be generated from this parasitism. resourcelimited resource limited countries Gerais Brazil PRISMA. PRISMA . (PRISMA) PubMed LILACS databases literature searched 1167 1 167 1,16 included 198 2019 14 4 1.4 574 57 00 0 0.0 667 66 7 66.7 23 2 3 2.3 57.4 females blackskinned black skinned (1.4 40.3%. 403 40.3% 40 40.3%) age 1012 10 12 10-1 45.3%. 453 45.3% 45 (45.3%) 16.0% 160 16 (16.0 79.5%, 795 79.5% , 79 5 79.5%) (0.0 44.7%, 447 44.7% 44 44.7%) 36.6%, 366 36.6% 36 6 36.6%) 35.4%, 354 35.4% 35 (35.4%) 39.2%. 392 39.2% 39 (39.2%) sexes ages races parasitism (PRISMA 116 1,1 19 201 1. 0. 66. 2. 57. (1. 40.3 101 10- 45.3 (45.3% 16.0 (16. 79.5 (0. 44.7 36.6 35.4 (35.4% 39.2 (39.2% 11 1, 20 (1 40. 45. (45.3 16. (16 79. (0 44. 36. 35. (35.4 39. (39.2 ( (45. (35. (39. (45 (35 (39 (4 (3

ABSTRACT Visceral leishmaniasis (VL) has shown endemic pattern and epidemic episodes in urban and rural areas, however, there are still gaps in knowledge with regards to disease transmission. This study aimed to analyze the spatiotemporal dispersion of VL cases in the municipality of Araçuaí, Minas Gerais. A study of confirmed VL cases was conducted considering the endemic and epidemic periods between 2012 and 2017. The incidence rate was calculated, and for spatial analysis, the kernel map, directional distribution ellipse, and space-time scanning techniques were used. The correlations between VL cases and exposure variables (precipitation, humidity, and temperature) were calculated. The mean incidence of VL in the endemic period was 18.5 (95% confidence interval (CI) 5.9-32.5) and 44.4 in the epidemic period (95%CI, 12.0-28.6) by 100,000 inhabitants. The relative risk for the epidemic period was 2.4 (95% CI 1.4-4.1) when compared to the endemic period. A higher incidence of the disease was observed in rural areas of the municipality. Kernel mapping analysis revealed hotspots in the urban area of the municipality. The directional distribution ellipse encompasses the urban perimeter and part of the rural area of the municipality, expanding eastward during the epidemic period. Spatial analysis revealed a high-risk cluster for VL in rural areas. A positive correlation was observed between VL cases and temperature during the endemic period. Spatial analysis allowed us to outline the epidemiological scenario of human VL cases. These findings may be useful in case surveillance and in the work of health professionals and managers in Brazil.

ABSTRACT Background: Dengue is a public health problem in Brazil. Therefore, this study aimed to analyze factors associated with deaths from dengue in residents of the municipality of Contagem, Metropolitan Region of Belo Horizonte, state of Minas Gerais, Brazil, during the 2016 epidemic. Methods: To determine the factors associated with deaths due to dengue, we used a logistic regression model (univariate and multivariable) in which the response variable (outcome) was death due to dengue. Independent variables analyzed included demographic variables and those related to symptoms, treatment, hospitalization, testing, comorbidities, and case history. Results: The factors associated with dengue deaths in the final multivariable model [p < 0.05; 95% confidence interval (CI)] were age (OR = 1.07; 95%CI 1.03-1.11) and presence of bleeding (OR = 8.55; 95%CI 1.21-59.92). Conclusions: The results showed that age and the presence of bleeding factors increased the risk of dengue death. These findings indicate that warning signs of dengue should be routinely monitored, and patients should be instructed to seek medical attention when they occur. It is also emphasized that the parameters and epidemiological conditions of dengue patients need to be continuously investigated to avoid a fatal outcome.

RESUMO Objetivo. Identificar e descrever, de forma geral, os fatores relacionados à ocorrência de epidemias de dengue no Brasil. Métodos. Revisão sistemática de estudos publicados entre 2008 e 2018 nas bases de dados MEDLINE, LILACS, PubMed, Cochrane, BVS, Web of Science e Scopus e em bancos de teses e dissertações, com o uso de descritores de dengue e de fatores associados à ocorrência de epidemias catalogados no portal DeCS/MeSH. Resultados. Trinta e cinco estudos realizados no Brasil foram selecionados. As epidemias registradas no país foram associadas e/ou correlacionadas a vários fatores como meio ambiente, condições socioeconômicas e climáticas, e aspectos relacionados ao vetor, entre outros. Conclusões. As epidemias de dengue são complexas e multifatoriais. Observou-se que ações contínuas de controle vetorial são essenciais para a redução da população de Aedes aegypti e o controle da doença. Para conter a propagação da dengue são necessárias medidas multissetoriais eficazes, abrangendo saúde, educação, economia, população, negócios e governo. As ações visando à detecção precoce de casos da doença contribuem para prevenir novos surtos epidêmicos.

ABSTRACT Objective. To identify and describe broadly the factors related to the occurrence of dengue epidemics in Brazil. Methods. Systematic review of studies published in Medline, Lilacs, PubMed, Cochrane, BVS, Web of Science, Scopus, and thesis and dissertations databases using descriptors cataloged in DeCs and MeSH on dengue and factors associated with the occurrence of epidemics, published from 2008 to 2018. Results. Thirty-five studies carried out in the country were selected. The epidemics recorded in Brazil were associated and/or correlated with multiple factors such as environment, socioeconomic conditions, climate, and aspects related to the vector, among others. Conclusions. Dengue epidemics are complex and multifactorial. The continuity of the vector control actions was found to be relevant to the reduction of Aedes aegypti and for disease control. To contain the spread of the disease, effective measures are needed in all sectors, including health, education, economy, population, business, and government. Actions for the early detection of cases of the disease can prevent new outbreaks of epidemics.

RESUMEN Objetivo. Determinar y describir de manera amplia los factores relacionados con la aparición de epidemias de dengue en Brasil. Métodos. Se llevó a cabo una revisión sistemática de los estudios publicados en MEDLINE, LILACS, PubMed, Cochrane, BVS, Web of Science, Scopus y en bases de datos de tesis y trabajos de final de grado con los descriptores catalogados en DeCS y MeSH sobre dengue y factores asociados con la aparición de epidemias publicados entre 2008 y 2018. Resultados. Se seleccionaron 35 estudios llevados a cabo en Brasil. Las epidemias registradas en el país se asociaron o se relacionaron con diversos factores, como el medioambiente, las condiciones socioeconómicas, el clima y aspectos relacionados con el vector, entre otros. Conclusiones. Las epidemias de dengue son complejas y multifactoriales. Se constató que la continuidad de las medidas de control de vectores es pertinente para la reducción de Aedes aegypti, así como para el control de la enfermedad. Para contener la propagación de la enfermedad son necesarias medidas eficaces en todos los sectores, como la salud, la educación, la economía, la población, las empresas y el gobierno. Las medidas de detección temprana de casos de la enfermedad pueden prevenir nuevos brotes de epidemias.

RESUMO: Objetivo: Descreveu-se a entrada de sorotipos do vírus da Dengue (DENV) no Brasil e em suas unidades federativas. Métodos: Realizou-se uma revisão sistemática de estudos publicados entre 1980 e 2018 em bancos de dados e na literatura cinzenta, utilizando-se descritores relacionados aos anos de entrada dos sorotipos do DENV. Além disso, consultou-se especialistas e fontes oficiais de informação (Ministério da Saúde do Brasil). Resultados: Das 100 publicações selecionadas para a revisão sistemática, 26 abordaram a entrada de sorotipos de DENV na região Norte do país, 33 no Nordeste, 24 no Sudeste, 14 no Centro-Oeste e cinco no Sul. O DENV-1 e o DENV-4 foram introduzidos na região Norte em 1981. O DENV-2 foi introduzido no Sudeste em 1990. O DENV-3 foi introduzido no Norte em 1999. Conclusão: A rápida expansão da dengue por todo o território brasileiro foi verificada a partir da segunda metade dos anos de 1980, com a entrada gradativa dos quatro sorotipos, o que resultou no surgimento de epidemias da arbovirose, que são atualmente verificadas no país. Considerando a epidemiologia da doença, mais informações devem ser divulgadas e publicadas na literatura científica de amplo alcance, para melhor entendimento da propagação e circulação dos sorotipos de DENV.

Objective: To describe the entry of Dengue virus (DENV) serotypes in Brazil and its federative units. Methods: A systematic review of studies published between 1980 and 2018 in databases and in the gray literature was performed using descriptors related to the years of entry of the DENV serotypes. Additionally, experts and official sources of information (Brazilian Ministry of Health) were consulted. Results: From 100 publications selected for the systematic review, 26 addressed the entry of DENV serotypes in the North region of the country, 33 in the Northeast, 24 in the Southeast, 14 in the Central-West, and five in the South. DENV-1 and DENV-4 were introduced in the North region in 1981. DENV-2 was introduced in the Southeast in 1990. DENV-3 was introduced in the North in 1999. Conclusion: The rapid expansion of dengue throughout the Brazilian territory was verified from the second half of the 1980s, with the gradual entry of the four serotypes, which resulted in the emergence of epidemics of arbovirus, which are currently verified in the country. Considering the epidemiology of the disease, more information should be disseminated and published in the wide-ranging scientific literature for a better understanding of the spread and circulation of DENV serotypes.

RESUMO: Objetivo: Descreveu-se a entrada de sorotipos do vírus da Dengue (DENV) no Brasil e em suas unidades federativas. Métodos: Realizou-se uma revisão sistemática de estudos publicados entre 1980 e 2018 em bancos de dados e na literatura cinzenta, utilizando-se descritores relacionados aos anos de entrada dos sorotipos do DENV. Além disso, consultou-se especialistas e fontes oficiais de informação (Ministério da Saúde do Brasil). Resultados: Das 100 publicações selecionadas para a revisão sistemática, 26 abordaram a entrada de sorotipos de DENV na região Norte do país, 33 no Nordeste, 24 no Sudeste, 14 no Centro-Oeste e cinco no Sul. O DENV-1 e o DENV-4 foram introduzidos na região Norte em 1981. O DENV-2 foi introduzido no Sudeste em 1990. O DENV-3 foi introduzido no Norte em 1999. Conclusão: A rápida expansão da dengue por todo o território brasileiro foi verificada a partir da segunda metade dos anos de 1980, com a entrada gradativa dos quatro sorotipos, o que resultou no surgimento de epidemias da arbovirose, que são atualmente verificadas no país. Considerando a epidemiologia da doença, mais informações devem ser divulgadas e publicadas na literatura científica de amplo alcance, para melhor entendimento da propagação e circulação dos sorotipos de DENV.

Objective: To describe the entry of Dengue virus (DENV) serotypes in Brazil and its federative units. Methods: A systematic review of studies published between 1980 and 2018 in databases and in the gray literature was performed using descriptors related to the years of entry of the DENV serotypes. Additionally, experts and official sources of information (Brazilian Ministry of Health) were consulted. Results: From 100 publications selected for the systematic review, 26 addressed the entry of DENV serotypes in the North region of the country, 33 in the Northeast, 24 in the Southeast, 14 in the Central-West, and five in the South. DENV-1 and DENV-4 were introduced in the North region in 1981. DENV-2 was introduced in the Southeast in 1990. DENV-3 was introduced in the North in 1999. Conclusion: The rapid expansion of dengue throughout the Brazilian territory was verified from the second half of the 1980s, with the gradual entry of the four serotypes, which resulted in the emergence of epidemics of arbovirus, which are currently verified in the country. Considering the epidemiology of the disease, more information should be disseminated and published in the wide-ranging scientific literature for a better understanding of the spread and circulation of DENV serotypes.

ABSTRACT COVID-19 is an infectious disease caused by the recently discovered coronavirus SARS-Cov-2. The disease became pandemic affecting many countries globally, including Brazil. Considering the expansion process and particularities during the initial stages of the epidemic, we aimed to analyze the spatial and spatiotemporal patterns of COVID-19 occurrence and to identify priority risk areas in Minas Gerais State, Southeast Brazil. An ecological study was performed considering all data from human cases of COVID-19 confirmed from the epidemiological week (EW) 11 (March 08, 2020) to EW 26 (June 27, 2020). Crude and smoothed incidence rates were used to analyze the distribution of disease patterns based on global and local indicators of spatial association and space-time risk assessment. Positive spatial autocorrelation and spatial dependence were found. Our results suggest that the metropolitan region of the State capital Belo Horizonte (MRBH) and Vale do Rio Doce mesoregions, as major epidemic foci in the beginning of the expansion process, have had important influence on the dispersion of SARS-CoV-2 in Minas Gerais State. Triangulo Mineiro/Alto Paranaiba region presented the highest risk of infection. In addition, six statistically significant spatiotemporal clusters were identified in the State, three at high risk and three at low risk. Our findings contribute to a greater understanding of the space-time disease dynamic and discuss strategies for identification of priority areas for COVID-19 surveillance and control.

Resumo Em São Luís, Maranhão, região Nordeste do Brasil, a notificação de casos de Leishmaniose Visceral (LV) intensificou-se em 1982, com padrão epidêmico e endêmico. Nessa cidade, o Centro de Controle de Zoonoses (CCZ) era uma entidade que realizava ações de controle e prevenção da doença, mas, nos últimos anos, a periodicidade de suas atividades reduziram-se significativamente, devido a diversos fatores técnico-políticos. Portanto, neste estudo avaliou-se o cenário epidemiológico da leishmaniose visceral humana (LVH) e a prevalência da doença em cães, após a descontinuidade das atividades do CCZ, no período de 2007-2016. A soroprevalência canina foi determinada de acordo com o perfil clínico e a sorologia. Os casos notificados de LVH foram realizados a partir de dados da Secretaria Municipal de Saúde de São Luís. Observou-se frequência de 45,8% (p = 0,0001) de cães soropositivos, dos quais 54% (p = 0,374) eram assintomáticos. Em relação aos casos humanos, ocorreram 415 notificações, com aumento na incidência das zoonoses observada no período. Assim, pode-se inferir que, com a interrupção das atividades de controle e vigilância, houve um grande número de animais circulantes positivos, atuando como fonte de infecção tanto para cães quanto para humanos.

Abstract In São Luís, Maranhão, northeastern Brazil, the notification of visceral leishmaniasis (VL) cases intensified in 1982, showing endemic and epidemic patterns. In this city, the Center for Zoonoses Control (CZC) was an organization in charge of the control and prevention of the disease. However, technical and political reasons have led to a significant decline in the periodicity of its activities. Therefore, in this study we evaluated the epidemiological scenario of human visceral leishmaniasis (HVL) and the prevalence of the disease in dogs after the cessation of the CZC activities, covering the period of 2007 to 2016. The seroprevalence of canine leishmaniasis was determined based on clinical and serological profiles. HVL cases were notified using data provided by the Municipal Health Department of São Luís. A seropositivity rate of 45.8% (p = 0.0001) was found among dogs, 54% (p = 0.374) of which were asymptomatic. As for human cases, there were 415 notifications, with an increase in the incidence of the zoonosis observed during the aforementioned period. Thus, it can be inferred that after the control and surveillance activities were curtailed, there was an increase in the number of seropositive animals in circulation, acting as reservoirs of infection for dogs and humans.

Leishmania infection in humans, dogs and sandflies was examined in the endemic visceral leishmaniasis (VL) municipality of Raposa, state of Maranhão, Brazil. In this study, we examined Leishmania chagasi infection in the blood serum of both humans and Canis familiaris and the natural Leishmania sp. infection rate in the sandfly vector, Lutzomyia longipalpis. Enzyme-linked immunosorbent assay, indirect immunofluorescence reaction and polymerase chain reaction were performed to detect Leishmania infections in humans, dogs and sandflies, respectively. Overall, 186 out of 986 studied human beings were infected with L. chagasi parasites, representing an infection prevalence of 18.9%. An even higher infection rate was detected in dogs, where 66 (47.8%) out of 138 were infected. Among all Lu. longipalpis captured (n = 1,881), only 26.7% were females. The Leishmania infection frequency for the vector Lu. longipalpis was 1.56%. Remarkably, all infected sandflies were found in the peridomiciliary area. Furthermore, a high incidence of asymptomatic forms of VL in the human and canine populations was observed. The results of this study suggest autochthonous transmission of L. chagasi in this endemic area for visceral leishmaniasis because infection by Leishmania sp. was identified in all important elements of the transmission chain.