Variation Among Strains of Aedes aegypti in Susceptibility to Oral Infection with Dengue Virus Type 2

Isabelle TardieuxUnité d'Ecologie des Systèmes Vectoriels, Institute Pasteur, Institute National de la Recherche Agronomique, Station de Zoologie et de Lutte Biologique, Paris, France

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Olivier PoupelUnité d'Ecologie des Systèmes Vectoriels, Institute Pasteur, Institute National de la Recherche Agronomique, Station de Zoologie et de Lutte Biologique, Paris, France

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Laurent LapchinUnité d'Ecologie des Systèmes Vectoriels, Institute Pasteur, Institute National de la Recherche Agronomique, Station de Zoologie et de Lutte Biologique, Paris, France

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François RodhainUnité d'Ecologie des Systèmes Vectoriels, Institute Pasteur, Institute National de la Recherche Agronomique, Station de Zoologie et de Lutte Biologique, Paris, France

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We compared 18 Aedes aegypti strains for oral susceptibility to dengue virus type 2 (DEN-2) using a feeding protocol in which all parameters remained constant, including the titer of the infectious bloodmeal. For most strains, no significant variation between replicates was observed. Comparisons between pairs of strains showed variation of different degrees, and allowed us to characterize the strains with respect to their oral susceptibility to DEN-2.

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