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.
Prior to conception
During first trimester
During second trimester
During third trimester
Congenital Infections