<prompt> The most common manifestation of congenital toxoplasmosisDeafnessChorioretinitisHepatosplenomegalyThrombocytopenia  <response>: Congenital toxoplasmosis is caused by toxoplasma gondi .The transmissibility increases but the risk of feral disease decreases with advancing pregnancy The classical triad of toxoplasmosis includes intracranial calcification, hydrocephalus and chorioretinitis. Diagnosis is confirmed by demonstrating IgM in serum of the baby Image : Severe, active retinochoroiditis. Reference : Ghai essential pediatrics, 9 th edition, pgno :264 