Figure 3

Curves of the annual age-specific incidence of fever (uncorrected axillary temperature ≥37.5°C) and P. falciparum malaria attacks (fever + asexual parasites). Histograms represent the parasite densities for P. falciparum (proportion of the parasite densities in number of parasites per μl of blood, for 100% of the malaria attacks). Values are drawn from passive monitoring of entire years (1997 to 2004, except 2002). Using only subjects with a recorded age from those years, the average number of inhabitants was 201 (ranged from 153 in 1997 to 236 in 2004). For each sample, the age of the subject used is the age at the time of the blood collection.