About 10% of babies with congenital CMV have signs, such as jaundice, rash, microcephaly, or low weight, at birth. Posted bymicrogen@dev May 3, 2024May 3, 2024 Leave a comment on About 10% of babies with congenital CMV have signs, such as jaundice, rash, microcephaly, or low weight, at birth. About 10% of babies with congenital CMV have signs, such as jaundice, rash, microcephaly, or low weight, at birth.