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Resistance to chloroquine (CQ) requires its replacement as first-line therapy for uncomplicated malaria in much of Africa. Combination therapy may improve efficacy and delay the selection of resistant malaria parasites. Combinations of sulfadoxine-pyrimethamine (SP) with 4-aminoquinolines offer affordable and available alternatives to CQ. We conducted a randomized, single-blinded trial to compare the efficacy of SP monotherapy with combinations of SP and either CQ or amodiaquine (AQ) for the treatment of uncomplicated falciparum malaria in patients over 6 months of age in Kampala, Uganda. Of the 448 patients enrolled, 428 (95%) completed follow-up. Clinical treatment failure after 14 days occurred in 21/140 (15.0%, 95% CI 9.522.0%) SP-treated, 11/152 (7.2%, 95% CI 3.712.6%) SP/CQ-treated, and 0/136 (0%, 95% CI 02.7%) SP/AQ-treated patients. Combination therapies were safe and offered superior efficacy to SP monotherapy. SP/AQ was the most efficacious. This low-cost combination regimen may provide an optimal alternative to CQ for the treatment of uncomplicated malaria in Uganda.
Received July 8, 2002. Accepted for publication October 17, 2002.
Acknowledgments: We thank study team members Denise Njama, Pauline Byakika, Hakim Sendagire, Sr., B.M. Karakire, Sam Nsobya, Moses Kiggundu, Regina Nakafeero, Christopher Bongole, Mary Kasango, Marx Dongo, Assay Balita, Sara Kibirango, and Annette Birabwa, and all patients who participated in the study.
Financial support: UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases (TDR) (RCS/T16/181/ 380 ID No. 970655), the Fogarty International Center/National Institutes of Health (TW00007, TW01506, and AI43301), and the Multilateral Initiative on Malaria.
Authors addresses: Anne F. Gasasira, Bridget Nzarubara, Annette Nassali and Moses R. Kamya, Makerere University Medical School, P.O. Box 7051, Kampala, Uganda. Grant Dorsey, Sarah G. Staedke and Philip J. Rosenthal, Department of Medicine, P.O. Box 0811, University of California, San Francisco, CA 94143.
Reprint requests: Philip J Rosenthal, Box 0811, University of California, San Francisco, 94143, E-mail: rosnthl{at}itsa.ucsf.edu
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