To evaluate the impact of the increase in consultation fees on malaria incidence in children presenting in the outpatient clinic of a privately funded hospital, we measured the impact of two fee increases on the number of pediatric outpatients. A 74% reduction in outpatients and a 78% reduction in malaria cases occurred in a course of four years. No differences were observed in an adjacent public hospital that does not charge consultation fees. This surprisingly strong effect may be the basis for increase in malaria morbidity and mortality, since in the time course of 4 years, an estimated 3000 children did not receive adequate malaria treatment in this region. Furthermore, it may drive parasite resistance, due to inadequate auto-medication.