Fig. 1

Patient selection process. InGef Institute for Applied Health Research Berlin, cCMV congenital cytomegalovirus, CMV cytomegalovirus, cCMV₉₀ infants with cCMV diagnosis during the first 90 days of life, “Representative” infants with no cCMV or CMV diagnosis in the observation period; cCMV_21-S, infants with cCMV diagnosis and symptoms during the first 21 days of life, “Healthy” infants with no ICD-10-GM diagnosis (except Z-diagnoses) until 4th preventive health checkup and no cCMV or CMV diagnosis in the observation period, DoL days of life, ICD-10-GM International Statistical Classification of Diseases and Related Health Problems, 10th Revision, German Modification, U4 fourth preventive checkup examination