Demographic information and study results by group and by malaria infectivity.

aMosquitoes that were presented in challenge and subsequently had evidence of blood in the midgut as determined by on-site observation through a dissection microscope.
bFed mosquitoes that had sporozoites in the salivary glands as determined by dissection after the challenge had been complete.
cThe geometric mean was calculated only on fed, infected mosquitoes.
dThe mean day of initial PCR detection refers to day post-challenge.
eThis volunteer who did not become infected before treatment was unique in that the first 8 mosquitoes presented to the volunteer did not feed.