Figure 1.

Protective efficacies were calculated for overlapping series of 61-days periods for six months after each IPTi administration (IPTi-1, first IPTi dose at month 3; IPTi-2, second IPTi dose at month 9; IPTi-3, third IPTi dose at month 15). The first 61-day period started at the time of an IPTi application, the last period ended at the time of the next IPTi application or 6 months after the last IPTi application (IPTi-3).