A Study of the Safety and Immunogenicity of High-Dose Quadrivalent Influenza Vaccine in Subjects Aged 65 Years and Older
Public ClinicalTrials.gov record NCT02553343. 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.
Official title
Safety and Immunogenicity Trial of High-Dose Quadrivalent Influenza Vaccine Administered by Intramuscular Route in Subjects Aged 65 Years and Older
Study identification
- NCT ID
- NCT02553343
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- Sanofi Pasteur, a Sanofi Company
- Industry
- Enrollment
- 792 participants
Conditions and interventions
Conditions
Interventions
- High-dose quadrivalent influenza virus vaccine Biological
- High-dose influenza virus vaccine Biological
- High-dose trivalent inactivated influenza vaccine Biological
Biological
Eligibility (public fields only)
- Age range
- 65 Years and older
- 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
- Aug 31, 2015
- Primary completion
- Apr 3, 2016
- Completion
- Apr 3, 2016
- Last update posted
- Feb 8, 2018
2015 – 2016
United States locations
- U.S. sites
- 9
- U.S. states
- 8
- U.S. cities
- 9
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Not listed | Milford | Connecticut | 06460 | — |
| Not listed | Coral Gables | Florida | 33134 | — |
| Not listed | Wichita | Kansas | 67207 | — |
| Not listed | St Louis | Missouri | 63104 | — |
| Not listed | Rochester | New York | 14609 | — |
| Not listed | Warwick | Rhode Island | 02886 | — |
| Not listed | Nashville | Tennessee | 37212 | — |
| Not listed | Salt Lake City | Utah | 84109 | — |
| Not listed | West Jordan | Utah | 84088 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT02553343, 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 Feb 8, 2018 · Synced Jul 23, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02553343 live on ClinicalTrials.gov.