Occurrence of Antibodies Cross-reacting With Autoantigens in Primary EBV Infection

Data collection: Participant characteristics (Illness course, complications of primary EBV infection and provided treatments) during 12 months (baseline visit and follow-up visits at 3, 6 and 12 months).

Data collection: blood samples (analysed for EBV serology, auto-antibody-testing/biobanking, RNA expression analyses, procalcitonin) during 12 months (baseline visit and follow-up visits at 3, 6 and 12 months).

Data collection: Patient reported outcome (Fatigue questionnaires) at 6 and 12 months.