Table 1.

Characteristics of the vaccination groups

Vaccination groupNo. of individualsMean age in yr (range)CTB doseVaccination point in relation to the menstrual cycle
Vaginalcorr 539 (34–44)1 mgDays 10 and 24
Vaginalind 841.5 (33–50)1 mgIndependent
Nasal842.4 (38–49)250 μgIndependent