Please assess the completion status of the following clinical trial:

Trial Title: Therapeutic Induction of Endogenous Antibiotics

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* 18-55 years of age~* duration of diarrhoea 0-4 days~* culture-confirmed Shigella spp (all Shigella spp) in stool on enrolment~Exclusion Criteria:~* who received antimicrobial treatment before attending the ICDDR,B hospital~* clinical symptoms of other concomitant infections (such as chronic respiratory infections, other concomitant gastrointestinal infections)

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 55 Years
- Healthy Volunteers: f

Study Arms:
- 1 (Type: ACTIVE_COMPARATOR): Patients will be instructed to lie on a bed (cholera cot) in left lateral position. A soft rectal catheter will be introduced by a nurse/physician, through which 80 ml of butyrate solution will be instilled slowly with a 50 ml plastic syringe. Patients will be asked to retain the enema for at least ½ hour by remaining supine for 30 minutes after the administration. However, if a patient cannot retain the enema for 30 minutes, he will be given a second round of enema immediately after defecation.
- 2 (Type: PLACEBO_COMPARATOR): Patients will be instructed to lie on a bed (cholera cot) in left lateral position. A soft rectal catheter will be introduced by a nurse/physician, through which 80 ml of saline solution will be instilled slowly with a 50 ml plastic syringe. Patients will be asked to retain the enema for at least ½ hour by remaining supine for 30 minutes after the administration. However, if a patient cannot retain the enema for 30 minutes, he will be given a second round of enema immediately after defecation.

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