Plasmodium falciparum resistant to artemisinin and diagnostics have emerged in Ethiopia

Nature

Plasmodium falciparum resistant to artemisinin and diagnostics have emerged in Ethiopia"


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Diagnosis and treatment of Plasmodium falciparum infections are required for effective malaria control and are pre-requisites for malaria elimination efforts; hence we need to monitor


emergence, evolution and spread of drug- and diagnostics-resistant parasites. We deep sequenced key drug-resistance mutations and 1,832 SNPs in the parasite genomes of 609 malaria cases


collected during a diagnostic-resistance surveillance study in Ethiopia. We found that 8.0% (95% CI 7.0–9.0) of malaria cases were caused by P. falciparum carrying the candidate artemisinin


partial-resistance kelch13 (K13) 622I mutation, which was less common in diagnostic-resistant parasites mediated by histidine-rich proteins 2 and 3 (pfhrp2/3) deletions than in wild-type


parasites (P = 0.03). Identity-by-descent analyses showed that K13 622I parasites were significantly more related to each other than to wild type (P 


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