- Females and males >=18 years of age with uncomplicated, symptomatic malaria as indicated by the presence of both of the following: a.) Blood smears positive for Plasmodium falciparum asexual parasitemia between 1000 -100,000 parasites/uL; b.) Fever or history of fever ( >=38.5C/101.2F rectal or tympanic; >=37.5C/99.5F axillary or >=38C/100.4F oral) within the prior 24 hours