<prompt> Highest rate of transmission of toxoplasmosis during pregnancy is seen in:1st trimesterIlnd trimesterIlIrd trimesterPuerperium  <response>: The incidence and severity of congenital infection depend on fetal age at the time of maternal infection.The risks for fetal infection increases with duration of pregnancy from 6 at 13 weeks to 72 at 36 weeks. Conversely the severity of fetal infection is much greater in early pregnancy and fetuses are much more likely to develop clinical findings of infection.Williams Obs. 24e, p 1255 