An illness usually manifesting in infancy resulting from rubella infection in utero and characterized by signs or symptoms from the following categories:
Presence of any defects or laboratory data consistent with congenital rubella infection
A case with some compatible clinical findings but not meeting the criteria for a probable case
A case that is not laboratory confirmed and that has any two complications listed in item (1) of the clinical criteria or one complication from item (1) and one from item (2), and lacks evidence of any other etiology.
A clinically compatible case that is laboratory confirmed
Infection only: a case that demonstrates laboratory evidence of infection, but without any clinical symptoms or signs.
In probable cases, either or both of the eye-related findings (i.e., cataracts and congenital glaucoma) are interpreted as a single complication. In cases classified as infection only, if any compatible signs or symptoms (e.g., hearing loss) are identified later, the case is reclassified as confirmed.