Spatial Evaluation and Modeling of Dengue Seroprevalence and Vector Density in Rio de Janeiro, Brazil

Dengue is a major public health problem in many tropical regions of the world, including Brazil, where Aedes aegypti is the main vector. We present a household study that combines data on dengue fever seroprevalence, recent dengue infection, and vector density, in three neighborhoods of Rio de Janeiro, Brazil, during its most devastating dengue epidemic to date. This integrated entomological–serological survey showed evidence of silent transmission even during a severe epidemic. Also, past exposure to dengue virus was highly associated with age and living in areas of high movement of individuals and social/commercial activity. No association was observed between household infestation index and risk of dengue infection in these areas. Our findings are discussed in the light of current theories regarding transmission thresholds and relative role of mosquitoes and humans as vectors of dengue viruses

ORIGIN AND PREVALENCE OF HUMAN T-LYMPHOTROPIC VIRUS TYPE 1 (HTLV-1) AND TYPE 2 (HTLV-2) AMONG INDIGENOUS POPULATIONS IN THE AMERICAS

Human T-lymphotropic virus type 1 (HTLV-1) is found in indigenous peoples of the Pacific Islands and the Americas, whereas type 2 (HTLV-2) is widely distributed among the indigenous peoples of the Americas, where it appears to be more prevalent than HTLV-1, and in some tribes of Central Africa. HTLV-2 is considered ancestral in the Americas and is transmitted to the general population and injection drug users from the indigenous population. In the Americas, HTLV-1 has more than one origin, being brought by immigrants in the Paleolithic period through the Bering Strait, through slave trade during the colonial period, and through Japanese immigration from the early 20th century, whereas HTLV-2 was only brought by immigrants through the Bering Strait. The endemicity of HTLV-2 among the indigenous people of Brazil makes the Brazilian Amazon the largest endemic area in the world for its occurrence. A review of HTLV-1 in all Brazilian tribes supports the African origin of HTLV-1 in Brazil. The risk of hyperendemicity in these epidemiologically closed populations and transmission to other populations reinforces the importance of public health interventions for HTLV control, including the recognition of the infection among reportable diseases and events

Hipertensão arterial sistêmica e morbidade psiquiátrica em ambulatório de hospital terciário Hypertension and psychiatric morbidity: a tertiary care setting experience

A hipertensão arterial sistêmica representa um dos principais fatores de risco para as doenças cardiovasculares que são a principal causa de morte em nosso meio. Hipertensos que frequentam hospital terciário apresentam elevada co-morbidade incluindo distúrbios psiquiátricos. O objetivo deste estudo é avaliar a morbidade psiquiátrica em hipertensos graves. Este estudo foi realizado em ambulatório geral de hospital terciário: 41 pacientes (26 mulheres e 15 homens) foram submetidos a consulta médica com aplicação do PRIME-MD, um questionário específico para diagnóstico de alterações psiquiátricas a ser realizado pelo clínico. A frequência de distúrbios psiquiátricos diferiu em homens e mulheres: 63,4% das mulheres na pesquisa apresentavam algum tipo de distúrbio contra 36,6% dos homens (p=0,012). A maior parte dos diagnósticos foi de distúrbios do humor representados pela depressão associada ou não a distúrbios ansiosos. A média de idade dos pacientes com distúrbio psiquiátrico foi 47,1 anos contra 59,3 anos dos pacientes sem distúrbio psiquiátrico (p=0,0049), mostrando a presença dos distúrbios psiquiátricos em pacientes mais jovens. Outros fatores pesquisados, como a pressão arterial sistólica, a pressão arterial diastólica e índice de massa corpórea não apresentaram diferenças em função dos distúrbios psiquiátricos apresentados. Concluímos que há grande co-morbidade psiquiátrica em hipertensos que frequentam ambulatórios de hospital terciário e que esses distúrbios são mais frequentes em mulheres e em pacientes jovens.<br>Arterial hypertension is one of the most important risk factor for cardiovascular disease, the main cause of death in Brazil. Hypertensive patients that have treated in tertiary care hospitals have shown elevated co-morbidity including psychiatric disturbances. Our objective is to study psychiatric co-morbidity among severe hypertensive patients. This study was performed in an out-patient clinic of tertiary medical care setting. Forty-one patients were enrolled in this research (26 women, 15 men). They were submitted to a clinical interview and answering the PRIME-MD, a specific questionnaire for diagnosis of psychiatric disturbances (by a general practitioner). Frequencies of psychiatric disturbances were different in men and women: 63.4% of the women in this study showed some type of psychiatric disturbance versus 36.6% of men (p=0.012). The majority of the diagnosis were mood disturbances, mainly depression associated or not with anxious disturbances. Mean age of psychiatric disturbance patients was 47.1 years versus 59.3 years in the patients without psychiatric disturbances (p=0.0049), showing the presence of psychiatric disturbances in younger patients. Other factors as systolic arterial blood pressure, diastolic arterial blood pressure and body mass index did not show any differences associated with psychiatric disturbance. We conclude that there is a great co-morbidity between high complexity hospitals hypertensive patients and that this type of disturbance is more frequent in women and in younger patients