Fig. 5.

An. coluzzii responses in a dual-port olfactometer to heptanal and a blend of five infection-associated aldehydes, Plas 5. Heptanal (10 µL) at two concentrations (g/mL) was presented with (yellow bars) and tested against (blue bars) odor (socks) from parasite-free study participants (5- to 12-y-old Kenyan children) over eight replicates. Plas 5 [heptanal, octanal, nonanal, (E)-2-octenal, and (E)-2-decenal] at four concentrations (10 µL of 100% approximating the amounts found in the foot odor samples) was presented with (orange bars) and tested against (blue bars) the synthetic lure MB5 [ammonia, l-(+)-lactic acid, tetradecanoic acid, 3-methyl-1-butanol, and butan-1-amine] over 10/11 replicates. Each replicate tested 30 mosquitoes. Predicted mean proportions and 95 CI are presented, from two separate GLMs (for heptanal and Plas 5 assays), assuming a binomial distribution and using a logit link function. *P < 0.05. (See Table S6 for details of the GLMs.)