Figure 1.

Symptomatic malaria episodes and asymptomatic Plasmodium falciparum infections

(A) Numbers of asymptomatic qPCR-detected infections, symptomatic malaria infections, and mean number of mosquitoes caught per room per night. The line for mosquitoes represents a smoothed polynomial function, and the shaded area is the 95% CI. (B) Prevalence of P falciparum by microscopy for individuals at indicated ages. (C) Prevalence of P falciparum by qPCR. (D) Parasite density distributions by qPCR for different age groups. The vertical lines indicate median densities for asymptomatic infections by years 1 and 2, as well as for the symptomatic infections (ie, the 2 years combined) in the different age groups, as specified in the key. qPCR=quantitative PCR.