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The deployment of artesunate for severe malaria and the artemisinin combination therapies (ACTs) for uncomplicated malaria has been a major advance in antimalarial therapeutics. These drugs have reduced treated mortality, accelerated recovery, and reduced treatment failure rates and transmission from the treated infection. Artemisinin derivatives remain highly effective against falciparum malaria in most malaria endemic areas but significant resistance has emerged in the Greater Mekong subregion of Southeast Asia. Resistance to artemisinins was followed by resistance in the ACT partner drugs, and fit multidrug resistant parasite lineages have now spread widely across the region. ACT remain highly effective against P. vivax and the other malaria species. Recent studies show that radical curative regimens of primaquine (to prevent relapse) can be shortened to seven days, and that the newly introduced single dose tafenoquine is an alternative, although the currently recommended dose is insufficient in Southeast Asia and Oceania. Targeted malaria elimination using focal mass treatments with dihydroartemisinin-piperaquine have proved safe and effective malaria elimination accelerators, but progress overall towards malaria elimination is slow. Indeed since 2015 overall malaria case numbers globally have risen. As new drugs will not become widely available in the near future, active measures to preserve the current antimalarials should be given the highest priority.

Original publication

DOI

10.1111/bcp.14474

Type

Journal article

Journal

British journal of clinical pharmacology

Publication Date

12/07/2020

Addresses

Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.