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Background  An artemisinin-based combination therapy, artesunate (AS) plus sulphadoxine-pyrimethamine (SP), was compared to SP monotherapy to provide evidence of further treatment options in southern Mozambique.    Methods  Between 2003 and 2005, 411 patients over one year and 10 kg with uncomplicated  Plasmodium falciparum  malaria were randomly allocated SP (25/1.25 mg per kg day 0) or AS/SP (as above plus 4 mg/kg artesunate days 0, 1 and 2). Allocation was concealed, but treatment was open-label except to microscopists. The primary objective was the relative risk of treatment failure, which was assessed using World Health Organization response definitions modified to a 42-day follow-up.    Results  Of the 411 subjects enrolled, 359 (87.3%) completed the follow up period (SP n = 175, AS/SP n = 184). A survival analysis including 408 subjects showed that the polymerase chain reaction-adjusted cure rates were 90.4% (95% confidence interval [CI] 84.9%–93.9%) and 98.0% (95% CI 94.8%–99.3%) for SP and AS/SP respectively. Multivariable analysis showed that treatment with AS/SP decreased the relative hazard of treatment failure by 80% compared to SP (hazard ratio [HR] 0.2; 95% CI 0.1–0.6) and age over seven years decreased the relative hazard of failure by 70% (HR 0.3; 95% CI 0.1–0.9), when compared to younger age. However, having a quintuple  dhfr / dhps  mutation increased the relative hazard of failure compared to fewer mutations (HR 3.2; 95% CI 1.3–7.5) and baseline axillary temperature increased the relative hazard of failure by 50% for each °C increase (HR 1.5; 95% CI 1.1–2.2).    Conclusion  While both treatments were efficacious, AS plus SP significantly decreased the relative hazard of treatment failure compared to SP monotherapy Artesunate plus sulphadoxine-pyrimethamine, but not sulphadoxine-pyrimethamine monotherapy, met the current WHO criteria of >95% efficacy for policy implementation.    Trial registration  NCT00203736 and NCT00203814

malaria journal

Efficacy of sulphadoxine-pyrimethamine with or without artesunate for the treatment of uncomplicated Plasmodium falciparum malaria in southern Mozambique: a randomized controlled trial