Epidemiología de hidatidosis en bovinos de consumO en la comarca andina del Paralelo 42
; Tisnés, Adela
; Fernández, Ricardo Otros responsables
Fecha
12/2019
Editorial
Ministerio de Salud de la Nación
Revista
Revista Argentina de Salud Pública
Título del libro
Nombre del evento
Fecha del evento
Institución organizadora
ISSN
1852-8724
eISSN
1853-810X
ISBN
Idioma
Español
Tipo del evento
Clasificación temática
Palabras clave
Resumen
INTRODUCCIÓN: La hidatidosis es un problema relevante en toda Argentina, y no se conoce la situación del bovino en su transmisión. El objetivo general del estudio fue indagar acerca de esta situación y, en particular, estimar la prevalencia de hidatidosis, evaluar la fertilidad de quistes hidatídicos (QH) y analizar los factores de riesgo y el patrón de distribución espacial. MÉTODOS: Se evaluó presencia de QH en hígados y pulmones de 432 bovinos. Se estimó prevalencia hidatídica y de establecimientos positivos y el intervalo de confianza (IC95%). Se tomaron 42 muestras de contenido de QH y se evaluó fertilidad. Se estudiaron variables asociadas a presencia de QH. Se calculó razón de prevalencia (RP) con IC95%. RESULTADOS: La prevalencia estimada fue del 22,2% (IC95%: 18,4-26,5%); 12 de 13 (92,3%) establecimientos fueron positivos. La localización de los QH fue 50% pulmonar, 4,2% hepática y 45,8% hepato-pulmonar. No se encontraron QH fértiles. Las variables que mejor explicaron la positividad fueron: provincia (p <0,000): Chubut 39,7%, Neuquén 5,8%; y categoría animal (p< 0,000): respecto a los novillos, los toros presentaron 13,8 veces más enfermedad (IC95%: 6-31) y las vacas, 8,1 veces más (IC95%: 4,2-15,7). Se identificaron dos clústeres espaciales de menor riesgo de presentación en Neuquén y uno de mayor riesgo al este de Chubut. CONCLUSIONES: El bovino no sería un hospedador importante en la mantención del ciclo de enfermedad, sino un indicador de contaminación ambiental.
INTRODUCTION: Hydatidosis is a relevant problem all over Argentina, and the influence of cattle on its transmission is unknown. The main objective of the study was to tackle this situation and, in particular, to estimate the prevalence of hydatidosis, evaluate fertility of hydatid cysts (HC) and analyze risk factors and spatial distribution pattern. METHODS: The presence of HC in livers and lungs of 432 bovines was evaluated. Hydatid prevalence, positive establishments and confidence interval (95%CI) were estimated. A total of 42 samples of HC content were taken, assessing fertility. Variables associated with presence of HC were studied. Prevalence ratio (PR) with 95%CI was calculated. RESULTS: The estimated prevalence was 22.2% (95%CI: 18.4-26.5%); 12 of 13 (92.3%) establishments were positive. The location of HC was 50% pulmonary, 4.2% hepatic and 45.8% hepato-pulmonary. No fertile HC were found. The variables that best explained positivity were: province (p< 0.000): Chubut 39.7%, Neuquén 5.8%; and animal category (p< 0.000): comparing with steers, bulls presented 13.8 times more disease (95%CI: 6-31) and cows, 8.1 times more (95%CI: 4.2-15.7). Two spatial clusters with lower risk of disease appearance were identified in Neuquén province and one of higher risk was detected in eastern Chubut. CONCLUSIONS: Cattle would not be an important host in the maintenance of the disease cycle, but an indicator of environmental contamination.
INTRODUCTION: Hydatidosis is a relevant problem all over Argentina, and the influence of cattle on its transmission is unknown. The main objective of the study was to tackle this situation and, in particular, to estimate the prevalence of hydatidosis, evaluate fertility of hydatid cysts (HC) and analyze risk factors and spatial distribution pattern. METHODS: The presence of HC in livers and lungs of 432 bovines was evaluated. Hydatid prevalence, positive establishments and confidence interval (95%CI) were estimated. A total of 42 samples of HC content were taken, assessing fertility. Variables associated with presence of HC were studied. Prevalence ratio (PR) with 95%CI was calculated. RESULTS: The estimated prevalence was 22.2% (95%CI: 18.4-26.5%); 12 of 13 (92.3%) establishments were positive. The location of HC was 50% pulmonary, 4.2% hepatic and 45.8% hepato-pulmonary. No fertile HC were found. The variables that best explained positivity were: province (p< 0.000): Chubut 39.7%, Neuquén 5.8%; and animal category (p< 0.000): comparing with steers, bulls presented 13.8 times more disease (95%CI: 6-31) and cows, 8.1 times more (95%CI: 4.2-15.7). Two spatial clusters with lower risk of disease appearance were identified in Neuquén province and one of higher risk was detected in eastern Chubut. CONCLUSIONS: Cattle would not be an important host in the maintenance of the disease cycle, but an indicator of environmental contamination.
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