Risk of transplacental transmission of toxoplasma gondii is maximum when mother is infected:
Risk of fetal infection in acute maternal toxoplasmosis increases with each trimester of pregnancy being 15%, 25% and 60% in 1st, 2nd and 3rd trimesters respectively But severity of fetal infection is much greater in early pregnancy.
Congenital Infections
Prior to conception
During first trimester
During second trimester
During third trimester
During third trimester