What Can Happen if I Have Toxoplasmosis During My Pregnancy?
Women infected with toxoplasmosis can transmit the infection across the placenta to their unborn baby. Infection early in the pregnancy is less likely to be transmitted to the baby than infection later in the pregnancy. Early infection results in more severe symptoms in the baby than a later one. Most babies infected during pregnancy show no sign of toxoplasmosis when they are born, but they may develop learning, visual, and hearing disabilities later in life.
Source: http://www.webmd.com