Review Question - QID 214349

A 1-day old newborn male infant is evaluated in the hospital after vaginal delivery. During his mother’s third trimester of pregnancy, screening tests revealed positive titers of antibodies that prompted evaluation of congenital infection in her baby following delivery. The infant is evaluated by an ophthalmologist, who identifies the pathologic findings on retinal examination seen in Figure A. CT scan of the brain shows the findings seen in Figure B. On physical examination, the infant is found to have macrocephaly and bulging of the anterior fontanelle. Which of the following congenital infections is the most likely etiology of this patient’s disease?