Malaria case definitions and vaccine efficacy in the according-to-protocol group.

*History of fever within the last 24 hours.
**Children who met these infection endpoints on the first day of the efficacy follow-up period were excluded from these analyses. Numbers of children at risk are shown in brackets.
aFever is documented by axillary temperature.
bAsexual stage P. falciparum parasites/μl blood; K denotes thousands.
cAND means “simultaneous presence of.”