A woman with a renal transplant developed a systemic cytomegalovirus infection. She recovered and 3 years later she became pregnant. She had 3 days of fever in the first trimester. She delivered an infant severely affected with congenital cytomegalovirus infection. The incidence of symptomatic congenital cytomegalovirus infection in infants born to immunosuppressed mothers who develop reactivated cytomegalovirus during their pregnancy seems high.