Please assess the completion status of the following clinical trial:

Trial Title: Efficacy of Chinese Herbal Medicine to Prevent and Treat COVID-19 Close Contacts

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

Eligibility Criteria:
Inclusion Criteria:~1. Household contact exposure to individuals with SARS-CoV-2 infection~2. Aged ≥18~3. General healthy or have a chronic, stable medical condition~4. Voluntarily signing a written informed consent form~5. Able to follow written and oral instructions in Chinese~Exclusion Criteria:~1. Moderate to severe symptomatic SARS-CoV-2 infection~2. An allergic history to Chinese herbal drugs or a known allergy to the ingredients of the study drug~3. Pregnancy, breastfeeding or plan to become pregnant within the study timeframe~4. Vulnerable adults (i.e., mentally or physically disabled to take care of himself/herself)~5. Any physical examination findings, and/or history of any illness, or concomitant medications that, in the opinion of the study investigator, might not be suitable to participate in the study

- Gender: ALL
- Minimum Age: 16 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Treatment group (Type: EXPERIMENTAL): Chinese Herbal Medicine
- Control group (Type: NO_INTERVENTION): usual care

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