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Malaria kills an estimated 800,000 children annually worldwide and infects hundreds of millions of other children. Three studies provide information on the efficacy and safety of malaria vaccines and treatments in infants and children.
In one industry-sponsored, double-blind, randomized trial, 894 infants (age range, 5–17 months) in Kenya and Tanzania received three doses (1 per month) of either RTS,S/AS01E malaria vaccine or rabies vaccine. At a mean follow-up of 8 months, the cumulative incidence of the first or only episode of Plasmodium falciparum infection was significantly lower in the malaria-vaccine group than in the rabies-vaccine group (8% vs. 16%). The rate of serious side effects was lower in the malaria-vaccine group (11% vs. 18…