MATERNAL INFECTION: Herpes Simplex: Sexually tranmitted viral disease that can be passed from an infected mother to the developing featus either during pregnancy or during delivery( perinnatly).Infected infants are affected by CNS ( CENTRAL NERVOUS SYSTEM) problem e.g ( microcephaly and psychometer disorder) , Growth deficiences , retinal dysphasia and Moderate to Severe SNHL hearing loss in one or both ears.