Please assess the completion status of the following clinical trial:

Trial Title: Vaccination of Children Following Allogeneic Stem Cell Transplantation

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: NONE
- Phase: PHASE3
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* pediatric recipient of allogeneic haematopoietic stem cell transplantation~* complete remission of underlying malignant disease (if applicable)~* stable haematopoietic engraftment~* Lansky-/Karnofsky-score \>= 60%~Exclusion Criteria:~* primary immunodeficiency~* hepatitis B or C, HIV infection~* application of radio-/ chemotherapy following stem cell transplantation~* extended chronic graft-versus-host disease (Karnofsky-scale \< 60%)~* coagulopathy~* known allergy/hypersensitivity towards ingredients of study vaccines~* seizure disorder, progressive neurologic disease

- Gender: ALL
- Minimum Age: None
- Maximum Age: 17 Years
- Healthy Volunteers: f

Based on this trial design, predict the completion outcome and termination type (if applicable).