Growth Patterns in Children With Congenital Cytomegalovirus Infection.

Background: Congenital cytomegalovirus infection (CMVc) affects 0.7%-6% of recent births. Among its clinical manifestations are low weight and length at birth. Objective: Describe the growth patterns of children with CMVc in their early years. Methods: Observational, multicenter study of patients with CMVc. Anthropometric data were collected during the first 2 years of life and compared with World Health Organization standards. Results: Anthropometric characteristics of 383 children with CMVc were studied, of which 198 (51%) were symptomatic at birth. At birth, 9% were small for gestational age (SGA) in terms of their weight and length and 17% had microcephaly. At 24 +/- 3 months, 10% had a weight and length <= 2 SD, and 13% a head circumference <= 2 SD. Of those who were SGA at birth, at 24 +/- 3 months >20% remained at <= 2 SD of their weight and length. Conversely, 75% of children with low weight or length at 24 +/- 3 had not been SGA at birth. 20% of infants with microcephaly at birth remained with microcephaly, and 10% of those without microcephaly developed it at 24 +/- 3 months. The average growth rate in length and weight was normal. Patients who were symptomatic at birth, premature and with motor and neurocognitive impairment had a significantly higher risk of low weight and length at 24 +/- 3 months. Conclusion: Around 10% of children with CMVc are at <= 2 SD in weight, length and head circumference at 24 +/- 3 months. The lack of adequate growth is associated with symptoms at birth, prematurity and motor and neurocognitive impairment. Growth impairment could be incorporated into the symptomatic spectrum of CMVc.