TORCH Information, TOXO

Toxoplasmosis

Toxoplasmosis is caused by Toxoplasma gondii, a parasite that can be acquired by the mother from handling cat feces, drinking unpasteurized milk, or eating contaminated meat. The infection is carried to the infant through the mother's placenta and can cause impairment of the infant's eyes (opthalmic impairment) and central nervous system (neurological dysfunction). The organism can invade brain or muscle tissue and form cysts. Infection acquired by the mother later in pregnancy usually decreases the likelihood of infection in the infant at birth although eye problems may occur in adolescence. Toxoplasmosis early in pregnancy is more likely to cause miscarriage or serious birth defects. The incidence of toxoplasmosis in newborns is one in 1,000 live births.