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La patogénesis y la transmisión del virus de la influenza de origen porcino 2009 A ((H1N1) en hurones
Vincent J Munster1, Emmie de Wit, Judith M A van den Brand
1National Influenza Center and Department of Virology, Erasmus Medical Center, 3015GE Rotterdam, The Netherlands.
Science (New York, N.Y.)
|July 4, 2009
Resumen
El virus de la influenza A ((H1N1) de 2009 es más patógeno que el A ((H1N1) estacional y se replica extensamente en el tracto respiratorio. Esto sugiere el potencial de persistencia y consecuencias graves en la población humana.
Área de la Ciencia:
- * Virología Virología.
- * Epidemiología.
- * La patogénesis de la patogénesis.
Sus antecedentes:
- * En 2009 surgió el virus de la gripe A ((H1N1) de origen porcino, causando preocupaciones de pandemia mundial.
- * Comprender su potencial patógeno y su transmisión es crucial para la salud pública.
Objetivo del estudio:
- * Para comparar la patogénesis y la transmisión del virus de la influenza A ((H1N1) de 2009 contra un virus A ((H1N1) estacional.
- * Para evaluar la extensión de la replicación viral y el derramamiento en un modelo de hurón.
Principales métodos:
- * Se utilizó un modelo de hurón para estudiar la patogénesis y la transmisión.
- * Los hurones fueron infectados con el virus de la gripe A ((H1N1) de 2009 o con un virus de la gripe A ((H1N1) estacional.
- * Se evaluó la replicación viral, el derramamiento y la eficiencia de transmisión.
Principales resultados:
- * El virus A ((H1N1) de 2009 mostró una mayor patogenicidad que el virus A ((H1N1) estacional.
- * Se produjo una extensa replicación viral en el tracto respiratorio de hurones infectados con el virus 2009 A ((H1N1), incluidas la tráquea, los bronquios y los bronquiolos.
- * La replicación del virus A ((H1N1) estacional se limitó a la cavidad nasal.
- * La diseminación de virus fue más abundante para el virus 2009 A ((H1N1).
- * La transmisión a través de aerosoles o gotas respiratorias fue igualmente eficiente para ambos virus.
Conclusiones:
- * El virus de la influenza A ((H1N1) de 2009 exhibe una mayor replicación y patogenicidad en el tracto respiratorio.
- * La transmisión eficiente sugiere el potencial de una circulación sostenida en la población humana.
- * Los hallazgos indican un riesgo de resultados clínicos más graves asociados con la cepa pandémica A ((H1N1) de 2009.
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