Please assess the completion status of the following clinical trial:

Trial Title: Effectiveness of Flu Vaccination and Burden of Illness Among Community-dwelling Elderly With Influenza Like Illness in Brazil

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:~* Subjects who the investigator believes that they can and will comply with the requirements of the protocol.~* A male or female \>= 65 years of age.~* Written informed consent obtained from the subject.~* Presenting within the first 72 hours of an influenza-like illness. Influenza-like illness is defined as the presence of:~  * Fever measured by the patient or physician and at least one of the following symptoms:~ * Sore throat.~ * Coryza (runny nose) and/or nasal congestion.~ * Cough.~* Availability to be followed up by phone or in person after an interval of approximately 14 - 21 days.~Exclusion Criteria:~* Receipt of any experimental influenza vaccine within 6 months of the onset of the influenza-like illness.~* Terminal stage of disease.~* Subjects living in a nursing home.~* Use of any investigational or non-registered product planned during the study period.~* Subjects who have already been enrolled in this study.

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Group 1 (Type: None): Subjects with influenza like illness

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