Please assess the completion status of the following clinical trial:

Trial Title: Vaccine Hyporesponse in Healthy Elderly Participants (MK-0000-131 AM2)

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Male or female aged 25 to 40 years old or 65 years of age or older at the prestudy (screening) visit~* Has no fever on day of screening~* Lacks Hepatitis B surface antigen seroreactivity~* If female 25 to 40 years of age, is not pregnant nor breastfeeding, and agrees to use effective contraception~Exclusion Criteria:~* Has a prior history of Hepatitis B Virus infection~* Has BMI (Body Mass Index) \>35~* If female 25 to 40 years of age, is pregnant, or expecting to conceive, donate eggs or breastfeed~* Has received immune globulin and/or blood products within 3 months prior to first dose received~* Has a history of immunosuppression resulting from disease (e.g., malignancy; human immunodeficiency virus \[HIV\] infection), or is currently taking corticosteroids or other immunosuppressive/cytotoxic therapy (cancer chemotherapy or organ transplantation)~* Has an active neoplastic disease~* Has had any infection including upper respiratory viral syndrome in the 6 weeks prior to planned collection of baseline laboratory samples~* Has received a live virus vaccine or an inactivated vaccine or is scheduled to receive a live virus vaccine or an inactivated vaccine in the period from 6 weeks prior to receipt of the first vaccine through the completion of all study visits

- Gender: ALL
- Minimum Age: 25 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Arm 1: Healthy, elderly participants (Type: None): Healthy participants 65 years old and older.
- Arm 2: Healthy, young, participants (Type: None): Healthy participants 25 to 40 years old.

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