Studies on the Burma (Thau.) strain of Plasmodium falciparum in Aotus trivirgatus monkeys.

The Burma (Thau.) strain of Plasmodium falciparum was established in 3 Aotus trivirgatus monkeys by the inoculation of parasitized blood from man. Subsequently, passage from monkey to monkey was obtained through subinoculation of blood parasites to 15 Aotus monkeys. Anopheles freeborni mosquitoes were fed on these infections on 207 occasions; in 105 of these trials, mosquitoes became infected. A total of 335 (9.9%) of the 3,378 individual mosquitoes dissected were infected. Passage of the infection by the bites of infected A. freeborni was attempted on 7 occasions; 4 of these transmission attempts were successful with prepatent periods ranging from 19 to 69 days.