MATERNAL INFECTION: Toxoplasmosis: Contracted from contaminated raw meats and eggs , as well as contact with cats feces. The diseases is transmitted to developing fetus via PLACENTA.It is caused variety of disorders: CNS disorders i.e Mcrocephaly , Hydrocephaly, Mental retardation, Intracranial calcification. Chorioretinitis(inflamation of choriod and Retina ). SNHL that may progressive. Heraing loss have been reported in 14 to 26% .