Classification of symptomatic congenital CMV infection
| Symptom | Criterion |
| Petechiae | |
| Hepatosplenomegaly | |
| Elevated liver enzymes | >2 times the upper limit for both alanine aminotransferase and aspartate aminotransferase levels |
| Direct hyperbilirubinaemia | >20% of total bilirubin level |
| Thrombocytopaenia | <150 000/µL |
| Abnormal brain ultrasound imaging | Intracranial calcifications, multiple germinal matrix cysts, LSV |
| Microcephaly | Head circumference less than the third percentile for the gestational age |
| SGA | Weight less than the tenth percentile for the gestational age |
| Chorioretinitis |
CMV, cytomegalovirus; LSV, lenticulostriate vasculopathy; SGA, small for gestational age.