Low HCMV DNA copies can establish infection and result in significant symptoms in extremely preterm infants: a prospective study.

Breast milk (BM) is the main source of human cytomegalovirus (HCMV) infection. We examined whether the number of HCMV DNA copies in BM is related to HCMV infection in very low birth weight (VLBW) infants. We identified 11 pairs of VLBW infants and mothers.