RESUMO
Os autores estudaram um caso humano de febre amarela silvestre, sob os aspectos clinico, laboratorial e epidemiologico. O paciente apresentava febre (39ºC), calafrios, sudorese, cefaleia, dor lombar, mialgia, dor abdominal em epigastrico, nauseas, vomitos, diarreia e prostracao. Realatava permanencia em areas onde foram constatados casos de febre amarela silvestre e nao havia historico de vacinacao anterior...
Assuntos
Humanos , Masculino , Adulto , Aedes/isolamento & purificação , Febre Amarela/diagnóstico , Ensaio de Imunoadsorção Enzimática , Febre/etiologia , Febre Amarela/sangue , Febre Amarela/epidemiologiaRESUMO
Através de coletas mensais realizadas pela Faculdade de Saúde Pública da USP foram encontradas larvas e um exemplar adulto de Aedes albopictus
Assuntos
Aedes/isolamento & purificação , Brasil , Larva/isolamento & purificaçãoRESUMO
A national serosurvey was conducted in Mexico from March to October 1986 to identify predictors of dengue transmission and target areas at high risk of severe annual epidemics. A total of 3,408 households in 70 localities with populations less than 50,000 were randomly sampled, and serology was obtained from one subject under age 25 years in each household. When comparing exposure and infection frequencies across the 70 communities, the authors found that median temperature during the rainy season was the strongest predictor of dengue infection, with an adjusted fourfold risk in the comparison of 30 degrees C with 17 degrees C. High temperatures increase vector efficiency by reducing the period of viral replication in mosquitoes. The proportion of houses in a community with larva on the premises was significantly associated with the community proportion infected (odds ratio (OR)adj = 1.9; 95% confidence interval (CI) 1.4-2.5), as was the proportion of households with uncovered water containers present (ORadj = 1.9; 95% CI 1.4-2.7). Because these factors have effects beyond the individual household and subjects infected from them create a risk for other subjects, both analyses of effects and organization of control efforts must be at the community level. A predictive model was constructed using the community level risk factors to classify communities as being at high, medium, or low risk of experiencing an epidemic; 57% of these communities were correctly classified using this model.
Assuntos
Dengue/epidemiologia , Adulto , Aedes/isolamento & purificação , Animais , Dengue/imunologia , Dengue/transmissão , Ecologia , Humanos , Larva/isolamento & purificação , México/epidemiologia , Razão de Chances , Distribuição Aleatória , Fatores de Risco , Estações do Ano , TemperaturaAssuntos
Culicidae/isolamento & purificação , Aedes/crescimento & desenvolvimento , Aedes/isolamento & purificação , Animais , Anopheles/crescimento & desenvolvimento , Anopheles/isolamento & purificação , Culicidae/crescimento & desenvolvimento , Larva , Especificidade da Espécie , Índias OcidentaisRESUMO
En 1977 ocurrió en el sur de Perú un extenso brote de una enfermedad hemorrágica que correspondía a la fiebre amarilla, y a pesar de uma amplia campaña de vacunación hubieron brotes recurrentes en años posteriores. Las circunstacias epidemiológicas en que acaecieron estos brotes indican que un importante factor determinante fue el ingreso, repetido anualmente, de trabajadores migratorios susceptibles en un foco enzootico de esta enfermedad. Durante el estudio de dichos brotes los autores intentaron aislar el virus de la fiebre amarilla de muestras de sangre obtenidas de seis pacientes en 1977, cuatro en 1978 y cuatro en 1981, en la zona endémica. Con este propósito se inyectó sangre entera de los pacientes a ratones lactantes (por via intracraneal), y se inocularon ademas cultivos de celulas C6/36 (Aedes albopictus), ratones lactantes, LLCMK2 y Vero. Las cepas del virus aisladas de seis de estos pacientes se identificaron posteriormente como agentes causales de la fiebre amarilla, y es esta la primera vez que se logra aislar el virus en Perú
Assuntos
Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Humanos , Masculino , Feminino , História do Século XX , Febres Hemorrágicas Virais/microbiologia , Febre Amarela/epidemiologia , Aedes/isolamento & purificação , Surtos de Doenças , Peru/epidemiologiaAssuntos
Humanos , Criança , Camundongos , 21003 , Masculino , Feminino , Infecções por Arbovirus/epidemiologia , Vírus da Encefalite Equina do Leste/isolamento & purificação , Dengue/epidemiologia , Vírus Bunyamwera/isolamento & purificação , Encefalite de St. Louis/epidemiologia , Sorologia/métodos , Testes de Inibição da Hemaglutinação/métodos , Testes de Fixação de Complemento/métodos , Testes de Neutralização/métodos , Vetores de Doenças , Reservatórios de Doenças , Jamaica/epidemiologia , Arbovírus/isolamento & purificação , Ecologia , Aedes/isolamento & purificação , Aves , Culicidae , Percevejos-de-CamaRESUMO
The summary covers the years 1950-1959, a period of technical and financial cooperation with the Pan American Sanitary Bureau, Regional Office for the Americas of the World Health Organization, and shows how an international organization can cooperate effectively with a government in the solution of problems of national and international importance. The Institute began its operation as the Section for Special Studies shortly after the demonstration of the existence of jungle yellow fever in Colombia in 1933. The early years of activity, up to 1948, were in cooperation with The Rockefeller Foundation. The current agreement between the Pan American Sanitary Bureau and the Instituto calls for the maintenance of a "viscerotomy" (partial autopsy: liver only) service for the recognition of yellow fever in the whole country; for the production, distribution, and application of 17D yellow fever vaccine; for the execution of epidemiological studies of yellow fever, especially in areas in which monkeys are scarce or non-existent; and for field and laboratory studies of other diseases caused by arborviruses. Originally the cooperative agreement included the Aëdes aegypti eradication operations. This activity was later turned over to the Servicio Cooperativo Interamericano de Salud Pública but in 1957 was back again in the Instituto, for the terminal phases of the campaign. The laboratory of the ...(AU)
Assuntos
Instalações de Saúde/organização & administração , Febre Amarela/diagnóstico , Febre Amarela/epidemiologia , Febre Amarela/imunologia , Monitoramento Epidemiológico/métodos , Vacinas/história , Saúde Pública/história , Aedes/isolamento & purificação , Instalações de Saúde/história , Pesquisa , ColômbiaRESUMO
A detailed tree hole survey for Aedes aegypti was carried out in the town of Arima, Trinidad. 8,045 trees were inspected and 63 holes were found with larvae of Aedes aegypti. The height of the positive holes varied from near ground level to 34 feet. Most of the trees found positive were common fruit trees. 25 of the 52 found positive were either breadfruit or chataigne, two varieties of Artocarpus communis, 7 were avocado (Persea americana), and six were golden apple (Spondias cytherea). 55 of the 63 tree holes found positive, i.e. 87 percent, were above the height of the average perifocal sprayer and hence would have escaped the treatment in the normal course of operations. There was light breeding in most of the holes. In a few it was very heavy, e.g. a mango tree hole with 150 larvae and pupae. Also found in 9 tree holes during the course of this work were larvae of Haemagogus spegazzinii. All the tree holes were treated with brickettes of benzene hexachloride in plaster of paris. (AU)