There is a ImmunizationAdministration document for the patient in his ehealth ecosystem with different Immunization entries.
Sequence
The practitioner HCP1 creates a ImmunizationAdministration document with an entry for a past illness Varicella undergone for immunization and stores it to the ehealth ecosystem.
Result
The Condition entry for pastillness can be found in the vaccination status of the patient in the ehealth ecosystem.