Please assess the completion status of the following clinical trial:

Trial Title: Immune Responses to the Flu Shot During Pregnancy

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

Eligibility Criteria:
Inclusion Criteria:~* less than 29 weeks pregnant~* ages 18-42~* planning to deliver at The Ohio State University Wexner Medical Center~Exclusion Criteria:~* prior serious adverse reaction to seasonal influenza vaccine

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: 42 Years
- Healthy Volunteers: t

Study Arms:
- Flu Shot (Type: None): pregnant women receive a seasonal influenza virus vaccination

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