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a Age-dependent prevalence of P. falciparum positive individuals during the high (circles) and the low (squares) transmission seasons. b Mean P. falciparum density per age group in acute malaria cases (triangles) and asymptomatic carriers (diamonds) during high transmission season in 2014 (CSS1). Parasite densities of acute malaria cases were approximately 66-fold higher than those of asymptomatic carriers in the 0–5 years age group and this threshold decreased with age
