Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Más filtros











Intervalo de año de publicación
1.
Parasit Vectors ; 14(1): 531, 2021 Oct 13.
Artículo en Inglés | MEDLINE | ID: mdl-34645492

RESUMEN

BACKGROUND: The diseases for which Aedes aegypti is a vector are worrisome. The high vector competence of this mosquito, as well as its anthropophilia and ability to adapt to the urban environment, allows it to exploit many habitats, making its prevention an arduous task. Despite current disease control measures focused on the mosquito, the effectiveness in containing its dispersion still requires improvement; thus greater knowledge about this insect is fundamental. METHODS: Aedes aegypti egg morphology and embryonic development were analyzed from eggs of the insectary of the Institute of Biomedical Sciences of the University of São Paulo. Optical (light and confocal) and electronic (transmission and scanning) microscopy were used to analyze the morphological and ultrastructural features of the eggs. Embryos were observed in the initial (0-20.5 h after egg-laying), intermediate (20.6-40.1 h after egg-laying), and final (40.2-61.6 h) stages of development, and kept at a temperature of 28 °C ± 1 °C until collection for processing. RESULTS: Eggs of Ae. aegypti were whitish at the time of oviposition, and then quickly became black. The egg length was 581.45 ± 39.73 µm and the width was 175.36 ± 11.59. Access to the embryo was difficult due to the egg morphology, point of embryonic development, and difficult permeability of the exochorion (mainly in fixation). Only about 5% of the collected eggs were successfully processed. In the initial stage of embryonic development, characteristics suggestive of intense cellular activity were found. In the intermediate stage, the beginning of the segmentation process was evident. In the final phase, it was possible to differentiate the cephalic region and the thoracic and abdominal segments. CONCLUSION: The chorion was found to be an important protective barrier and a limiting factor for the evaluation of the embryos and mosquito embryonic cells, indicating that further studies need to be carried out to identify the reason that this occurs.


Asunto(s)
Aedes/crecimiento & desarrollo , Desarrollo Embrionario , Óvulo/citología , Óvulo/fisiología , Animales , Dengue/transmisión , Femenino , Mosquitos Vectores/virología , Oviposición , Óvulo/crecimiento & desarrollo
2.
Nursing (Ed. bras., Impr.) ; 24(273): 5255-5266, fev.2021.
Artículo en Portugués | BDENF - Enfermería, LILACS | ID: biblio-1148502

RESUMEN

Objetivo: Analisar a estimativa dos indicadores de saúde da COVID-19 nos quatro primeiros meses da pandemia a partir da confirmação do primeiro caso. Método: Estudo ecológico. Foram coletados os casos confirmados de COVID-19 do Estado de São Paulo (ESP) dos meses de fevereiro a junho, obtidos do Centro de Vigilância Epidemiológica do ESP. A análise dos dados foi realizada a partir de indicadores de saúde e a população foi obtida pela Fundação Sistema Estadual de Análise de Dados do ESP. O estudo não passou por Comitê de Ética e Pesquisa por se tratar de dados públicos. Resultado: Nos primeiros quatro meses da pandemia da COVID-19 no ESP houve aumento consecutivos do número de municípios afetados, casos confirmados, óbitos, coeficientes de incidência e mortalidade e declínio do coeficiente de letalidade. Conclusão: Verificamos diminuição dos óbitos da COVID-19 no ESP e isso pode estar associado ao aprimoramento do manejo clínico da doença.(AU)


Objective: To analyze the estimate of the health indicators of COVID-19 in the first four months of the pandemic from the confirmation of the first case. Method: Ecological study. Confirmed cases of COVID-19 from the State of São Paulo (ESP) from February to June were collected from the Center for Epidemiological Surveillance of ESP. Data analysis was carried out based on health indicators and the population was obtained by the ESP State System of Data Analysis Foundation. The study did not go through the Ethics and Research Committee because it is public data. Result: In the first four months of the COVID-19 pandemic in ESP, there was a consecutive increase in the number of affected municipalities, confirmed cases, deaths, incidence and mortality rates and a decline in the lethality rate. Conclusion: We verified a decrease in the deaths of COVID-19 in the ESP and this may be associated with the improvement of the clinical management of the disease.(AU)


Objetivo: Analizar la estimación de los indicadores de salud de COVID-19 en los primeros cuatro meses de la pandemia desde la confirmación del primer caso. Método: Estudio ecológico. Los casos confirmados de COVID-19 del Estado de São Paulo (ESP) de febrero a junio fueron recolectados del Centro de Vigilancia Epidemiológica de ESP. El análisis de los datos se realizó con base en indicadores de salud y la población fue obtenida por la Fundación Sistema Estatal de Análisis de Datos ESP. El estudio no pasó por el Comité de Ética e Investigación por tratarse de datos públicos. Resultado: En los primeros cuatro meses de la pandemia de COVID-19 en ESP, hubo un aumento consecutivo en el número de municipios afectados, casos confirmados, defunciones, tasas de incidencia y mortalidad y una disminución en la tasa de letalidad. Conclusión: Verificamos una disminución de las muertes por COVID-19 en el ESP y esto puede estar asociado a la mejora del manejo clínico de la enfermedad.(AU)


Asunto(s)
Humanos , Infecciones Neumocócicas/mortalidad , Indicadores de Salud , Pandemias , Monitoreo Epidemiológico , COVID-19/mortalidad , Características de la Residencia , Incidencia , Estudios Ecológicos , Análisis de Datos
3.
Parasit Vectors, v, 14, 531, out. 2021
Artículo en Inglés | Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP | ID: bud-3972

RESUMEN

Background The diseases for which Aedes aegypti is a vector are worrisome. The high vector competence of this mosquito, as well as its anthropophilia and ability to adapt to the urban environment, allows it to exploit many habitats, making its prevention an arduous task. Despite current disease control measures focused on the mosquito, the effectiveness in containing its dispersion still requires improvement; thus greater knowledge about this insect is fundamental. Methods Aedes aegypti egg morphology and embryonic development were analyzed from eggs of the insectary of the Institute of Biomedical Sciences of the University of São Paulo. Optical (light and confocal) and electronic (transmission and scanning) microscopy were used to analyze the morphological and ultrastructural features of the eggs. Embryos were observed in the initial (0–20.5 h after egg-laying), intermediate (20.6–40.1 h after egg-laying), and final (40.2–61.6 h) stages of development, and kept at a temperature of 28 °C ± 1 °C until collection for processing. Results Eggs of Ae. aegypti were whitish at the time of oviposition, and then quickly became black. The egg length was 581.45 ± 39.73 μm and the width was 175.36 ± 11.59. Access to the embryo was difficult due to the egg morphology, point of embryonic development, and difficult permeability of the exochorion (mainly in fixation). Only about 5% of the collected eggs were successfully processed. In the initial stage of embryonic development, characteristics suggestive of intense cellular activity were found. In the intermediate stage, the beginning of the segmentation process was evident. In the final phase, it was possible to differentiate the cephalic region and the thoracic and abdominal segments. Conclusion The chorion was found to be an important protective barrier and a limiting factor for the evaluation of the embryos and mosquito embryonic cells, indicating that further studies need to be carried out to identify the reason that this occurs.

4.
Nursing (Ed. bras., Impr.) ; 23(266): 4311-4316, 2020.
Artículo en Portugués | BDENF - Enfermería, LILACS | ID: biblio-1123499

RESUMEN

Objetivo: Analisar a magnitude do Novo Coronavírus (COVID-19) no Estado de São Paulo (ESP) nos dois primeiros meses da epidemia a partir da confirmação do primeiro caso. Método: Estudo ecológico, descritivo, considerando os casos confirmados de COVID-19 captados pelo Centro de Vigilância Epidemiológica do ESP para o período de 26 de fevereiro a 26 de abril de 2020. Resultado: Verificou-se que o município de São Paulo apresentou maior número de casos (13989) e óbitos (1172). No entanto, não foi o município que apresentou os maiores indicadores de saúde da COVID-19 (magnitudes: taxa de incidência, mortalidade e letalidade). Conclusão: É provável que tais resultados se devam à falta de testagem do COVID-19 nos municípios do Estado. O potencial da epidemia, ainda, é particularmente preocupante, dado ao grande número de pessoas potencialmente suscetíveis ao COVID19 e a magnitude da mesma que extrapola os indicadores mundiais em algumas localidades.(AU)


Objective: To analyze the magnitude of the New Coronavirus (COVID-19) in the State of São Paulo (SSP) in the first two months of the epidemic after the confirmation of the first case. Method: Ecological, descriptive study, considering the confirmed cases of COVID-19 captured by the SSP Epidemiological Surveillance Center for the period from February 26 to April 26, 2020. Result: It was found that the municipality of São Paulo presented a greater number of cases (13,989) and deaths (1,172). However, it was not the municipality that presented the highest magnitude for health indicators of COVID-19 incidence rate, mortality and lethality. Conclusion: Um explanation for such results is the lack of testing of COVID-19 in the municipalities studied. The potential of the epidemic is still of particular concern, given the large number of people potentially susceptible to COVID19 and the magnitude of the epidemic that extrapolates world indicators in some locations.(AU)


Objetivo: Analizar la magnitud del nuevo coronavirus (COVID-19) en el estado de São Paulo (ESP) en los primeros dos meses de la epidemia después de la confirmación del primer caso. Método: Estudio ecológico descriptivo, considerando los casos confirmados de COVID-19 capturados por el Centro de Vigilancia Epidemiológica ESP para el período del 26 de febrero al 26 de abril de 2020. Resultado: Se encontró em el municipio de São Paulo un mayor número de casos (13989) y defunciones (1172). Sin embargo, no fue el municipio el que presentó las más altas magnitudes para los indicadores de salud de COVID-19 tasa de incidencia, mortalidad y letalidad. Conclusión: És probable que tales resultados se deban a la falta de pruebas de COVID-19 en los municipios del Estado. El potencial de la epidemia sigue siendo motivo de especial preocupación, dada la gran cantidad de personas potencialmente susceptibles a COVID19 y la magnitud de la epidemia que extrapola los indicadores mundiales en algunos lugares.(AU)


Asunto(s)
Humanos , Neumonía Viral , Enfermería en Salud Pública , Infecciones por Coronavirus/epidemiología , Pandemias/estadística & datos numéricos , Betacoronavirus , Investigación sobre Servicios de Salud
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA