A Case Control Study of the Effectiveness of Q/LAIV Versus Inactivated Influenza Vaccine and No Vaccine in Subjects 2-17 Years of Age
Public ClinicalTrials.gov record NCT01997450. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This is a post-marketing case-controlled study of the effectiveness of a quadrivalent live attenuated influenza vaccine (Q/LAIV/FluMist® Quadrivalent) versus Inactivated Influenza Vaccine (IIV) and No Vaccine in subjects 2-17 years of age.
Study identification
- NCT ID
- NCT01997450
- Recruitment status
- Terminated
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 4,121 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 2 Years to 17 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 2, 2013 (Actual)
- Primary completion
- Apr 15, 2016 (Actual)
- Completion
- Apr 15, 2016 (Actual)
- Last update posted
- Mar 10, 2025
2013 – 2016
United States locations
- U.S. sites
- 8
- U.S. states
- 8
- U.S. cities
- 8
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Research Site | Gainesville | Florida | 32608 | — |
| Research Site | Bloomington | Minnesota | 55440 | — |
| Research Site | Winston-Salem | North Carolina | 27157 | — |
| Research Site | Akron | Ohio | 44308-1063 | — |
| Research Site | Portland | Oregon | 97227 | — |
| Research Site | Nashville | Tennessee | 37212 | — |
| Research Site | Temple | Texas | 76508 | — |
| Research Site | Marshfield | Wisconsin | 54449 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 4 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01997450, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Mar 10, 2025 · Synced Oct 19, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01997450 live on ClinicalTrials.gov.