Abstract
In the context of a trial studying intermittent preventive sulfadoxine-pyrimethamine treatment of malaria in infants in Lambaréné, Gabon, children aged 18-30 months were followed up after having received their last dose at an age of 15 months. In the intention-to-treat population, the protective efficacy against all malaria episodes was -18.0 (95% confidence interval, -97.4 to 29.5; P = .529). The protective efficacy against first or only anemia episode was -45.3 (95% confidence interval, -234.5 to 36.3; P=.375). The protective efficacies were negative and were not statistically significant. These results do not appear to support the concept of a rebound effect after intermittent preventive sulfadoxine-pyrimethamine treatment of malaria in infants. Clinical trials registration. NCT00167843.
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