Comparative Efficacy of Certain South American Aëdes and Haemagogus Mosquitoes as Laboratory Vectors of Yellow Fever

Mary B. Waddell
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Aedes leucocelaenus Dyar and Shannon is shown to be an efficient vector of yellow fever virus, producing fatal infection, by bite, in laboratory animals.

On the basis of an assumed transmission rate of 1.00 for Aëdes aegypti, the following transmission ratios were obtained: Aëdes leucocelaenus, 1.29; a mixed group of Haemagogus capricornii and H. spegazzinii, 0.73; H. equinus, 0.45; Aëdes scapularis, 0.31; and H. splendens, 0.16.

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