Please assess the completion status of the following clinical trial:

Trial Title: A Study To Investigate Two 3-dose Schedules Of A Clostridium Difficile Vaccine In Healthy Adults Aged 65 to 85 Years

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE2
- Number of Arms: 6.0

Eligibility Criteria:
Inclusion Criteria:~* Healthy male and female subjects~* Aged 65 to 85 years~Additional Inclusion Criteria for the extension Stage:~* Receipt of all 3 doses of C difficile vaccine (100 µg or 200 µg antigen dose level) in the original portion of the study.~Exclusion Criteria:~* Proven or suspected prior episode of Clostridium difficile associated diarrhea~* Unstable chronic medical condition~* Disease requiring significant change in therapy or hospitalization for worsening disease within 8 weeks before receipt of study vaccine~* Serious chronic disorders~* Congenital or acquired immunodeficiency disorders~* Rheumatologic disorders or other illnesses requiring chronic treatment with known immunosuppressant medications.~* Active or treated leukemia or lymphoma or bone marrow disorder~* Any contraindication to vaccination or vaccine components including previous anaphylactic reaction to any vaccine or vaccine-related components~Additional Exclusion Criteria for the Extension Stage:~* Subjects originally randomized to placebo during the original portion of the study.~* Subjects who have already completed Visit 9 prior to study unblinding.

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: 85 Years
- Healthy Volunteers: t

Study Arms:
- Low-dose C. difficile Vaccine (accelerated schedule) (Type: EXPERIMENTAL): None
- High-dose C. difficile Vaccine (accelerated schedule) (Type: EXPERIMENTAL): None
- Placebo (accelerated schedule) (Type: PLACEBO_COMPARATOR): None
- Low-dose C. difficile Vaccine (non-accelerated schedule) (Type: EXPERIMENTAL): None
- High-Dose C. difficile Vaccine (non-accelerated schedule) (Type: EXPERIMENTAL): None
- Placebo (non-accelerated schedule) (Type: PLACEBO_COMPARATOR): None

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