Absence of putative Plasmodium falciparum artemisinin resistance mutations in sub-Saharan Africa: A molecular epidemiologic study. Plasmodium falciparum parasites that are resistant to artemisinins have been detected in Southeast Asia. Resistance is associated with several polymorphisms in the parasite's K13-propeller gene. The molecular epidemiology of these artemisinin-resistant genotypes in African parasite populations is unknown. We developed an assay to quantify rare polymorphisms in parasite populations using a pooled deep-sequencing approach to score allele frequencies, validated it using mixtures of laboratory parasite strains, and then employed it to screen over 1,100 African P. falciparum infections collected since 2002 from 14 sites across sub-Saharan Africa.
GlobalResearch at UCSF presents the broad scope of health research that is being conducted by UCSF researchers worldwide