Susceptibility of a New World Monkey to Plasmodium Malariae from Man

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  • Department of Preventive Medicine, Stanford University School of Medicine, Stanford, California 94305

A strain of Plasmodium malariae from a patient with congenital quartan malaria was isolated in a splenectomized night monkey, Aotus trivirgatus. After a prepatent period of 100 days, the parasitemia developed to a peak of 97,920 parasites per cmm of blood. The strain is being maintained in splenectomized and intact A. trivirgatus.