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Assessment of the efficacy of first-line antimalarial drugs after 5 years of deployment by the National Malaria Control Programme in Côte d'Ivoire

Authors Offianan AT, Assi SB, Coulibaly A, N'guessan LT, Ako AA, Kadjo FK, San MK, Penali LK

Published 11 November 2011 Volume 2011:3 Pages 67—76

DOI https://doi.org/10.2147/OAJCT.S24687

Review by Single-blind

Peer reviewer comments 2

Andre T Offianan1, Serge B Assi2, Aristide MA Coulibaly1, Landry T N'guessan1, Aristide A Ako1, Florence K Kadjo2, Moïse K San2, Louis K Penali2
1Malariology Department, Institut Pasteur de Côte d'Ivoire, Abidjan, Côte d'Ivoire; 2National Malaria Control Programme, Abidjan, Côte d'Ivoire

Background: The emergence of artemisinin resistance has raised concerns that the most potent antimalarial drug may be under threat. Artesunate + amodiaquine (ASAQ) and artemether-lumefantrine (AL) are respectively the first- and second-line treatments for uncomplicated falciparum malaria in Côte d'Ivoire. A comparison of the efficacy and safety of these two drug combinations was necessary to make evidence-based drug treatment policies.
Methods: In an open-label, non inferiority, randomized, controlled clinical trial, children aged 6–59 months were randomized to receive ASAQ or AL. Both drug regimens were given for 3 days, and follow-up was for 28 days. The primary endpoint was the 28-day cure rates and was defined as proportion of patients with polymerase chain reaction (PCR)-corrected cure rate after 28 days of follow-up.
Findings: A total of 251 patients who were attending the Ayame and Dabakala hospitals and presenting with symptomatic acute uncomplicated falciparum malaria were randomized to receive ASAQ (128) and AL (123). The intention-to-treat analysis showed effectiveness rates of 94.5% and 93.5% for ASAQ and AL, respectively on day 28. After adjustment for PCR results, these rates were 96.1% and 96.8%, respectively. On day 28, the per-protocol analysis showed effectiveness rates of 98.4% and 96.6% for ASAQ and AL, respectively. After adjustment by PCR for reinfection, these rates were 100% for each drug, and both regimens were well tolerated.
Conclusion: ASAQ and AL remain efficacious treatments of uncomplicated falciparum malaria in Ivorian children 5 years after adoption. The efficacy of ASAQ and AL in Côte d'Ivoire requires, therefore, continuous monitoring and evaluation.

Keywords: artesunate, amodiaquine, artemether-lumefantrine, ASAQ, AL

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