The Chesson Strain of Plasmodium vivax in Aotus Monkeys and Anopheline Mosquitoes

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Abstract
The Chesson strain of P. vivax [human parasite] was studied in A. trivirgatus monkeys, Parasitemia in intact and splenectomized animals was similar to that reported for this strain in man. Comparative infectivity studies with mosquitoes fed on infected monkeys indicated that the most susceptible was Anopheles freeborni, followed by A. balabacensis balabacensis, A. culicifacies, A. maculus, A. atroparvus, A. stephensi, A. quadrimaculatus, and A. albimanus. Transmission via sporozontes from A. maculatus was demonstrated on 2 occasions; prepatent periods were 30 and 32 days.