In addition there is evidence (Personal communication Chandramohan 2005) that the outcome (Adequate Parasite Response (APR)) of asymptomatic parasitaemia in infants is better than that in symptomatic 6-59 month old children when using SP. For this reason we plan a novel study examining the efficacy of SP in asymptomatic 2-10 month old infants, the target age group for IPTi.