Congenital transmission
  Toxoplasma gondii via maternal bloodstream infects the placenta and then enters the fetal circulation. Maternal infection before gestation poses little or no risk to the fetus except than women who become infected just a few months (at the most three) before conception (2). Transmission and severity of disease are determined by the gestational age of which the mother became infected and they are inversely related. So, maternal infection during the first and the second trimester may result in severe congenital toxoplasmosis, abortion, death of the fetus in uterus, perinatal death or stillbirth despite the fact that during those trimesters the risk of congenital transmission is reduced (less than 15% at 13 weeks of gestation) (3). By contrast, maternal infection during the third trimester (late infection) leads to a greater risk of subclinical infection in newborns (up to 70%) (3-5).