Latent toxoplasmosis is the most widespread parasite infection in developed
and developing countries. The prevalence of Toxoplasma gondii infection va
ries mostly between 20 to 80% in different territories. This form of toxopl
asmosis is generally considered to he asymptomatic. Recently published resu
lts, however, suggest that the personality profiles of infected subjects di
ffer from those of uninfected controls. These results, however, were obtain
ed on non-standard populations (biologists or former acute toxoplasmosis pa
tients). Here we studied the personality profiles of 191 young women tested
fair anti-Toxoplasma immunity during gravidity. The results showed that th
e differences between Toxoplasma-negative and Toxoplasma-positive subjects
exits also in this sample of healthy women. The subjects with latent toxopl
asmosis had higher intelligence, lower guilt proneness, and possibly also h
igher ergic tension. The difference in several other factors (desurgency/su
rgency, alaxia/protension, naivete/shrewdness, and self-sentiment integrati
on) concerned changes in the variances, rather than the mean values of the
factors.