Toxoplasmosis . Cohort studies . Ecological studies . Neuropsychiatric diseases neurological disorders .Parasite infection

Abstract The neurotropic pathogen Toxoplasma gondii in- fects about one third of human population. For a long time, it is well known that both acute and latent (life-long) forms of toxoplasmosis are associated with specific neurologic and neuropsychiatric symptoms. Here, the possible effects of la- tent toxoplasmosis on neurological and psychiatric disorders are surveyed and some general methodological problems of corresponding studies are discussed.