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Practical Guide for in vivo Antimalarial Drug-Efficacy Studies in the Americas; 2003

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Resistance of Plasmodium falciparum to antimalarial drugs is one of the most serious challenges facing national malaria control programs in the Americas. At present, P. falciparum is resistant to both chloroquine (CQ) and sulfadoxine-pyrimethamine (SP) throughout the Amazon Basin and to CQ alone on the Pacific Coast of South America.