A Study to Learn About the Safety, Tolerability, and Immunogenicity of a Fifth Dose of 6-Valent OspA-Based Lyme Disease Vaccine
Public ClinicalTrials.gov record NCT07500506. 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
A PHASE 3, RANDOMIZED, PLACEBO-CONTROLLED, DOUBLE-BLINDED STUDY TO EVALUATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF A FIFTH DOSE OF 6-VALENT OSPA-BASED LYME DISEASE VACCINE, VLA15, IN HEALTHY PARTICIPANTS ≥7 YEARS OF AGE
Study identification
- NCT ID
- NCT07500506
- Recruitment status
- Not yet recruiting
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- Pfizer
- Industry
- Enrollment
- 1,712 participants
Conditions and interventions
Conditions
Interventions
- Placebo Biological
- VLA15 Biological
Biological
Eligibility (public fields only)
- Age range
- 7 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
- Apr 9, 2026
- Primary completion
- Dec 3, 2026
- Completion
- Dec 3, 2026
- Last update posted
- Mar 29, 2026
2026
United States locations
- U.S. sites
- 11
- U.S. states
- 6
- U.S. cities
- 10
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| MaineHealth Pen Bay Hospital | Rockport | Maine | 04856 | — |
| ActivMed Practices and Research | Methuen | Massachusetts | 01844 | — |
| IMA Clinical Research Warren | Warren Township | New Jersey | 07059 | — |
| Smith Allergy and Asthma Specialists | Cortland | New York | 13045 | — |
| Smith Allergy & Asthma Specialists | Horseheads | New York | 14845 | — |
| Preferred Primary Care Physicians, Preferred Clinical Research (Ofc 18) | Pittsburgh | Pennsylvania | 15236 | — |
| Guthrie Medical Group, P.C. | Sayre | Pennsylvania | 18840 | — |
| Robert Packer Hospital | Sayre | Pennsylvania | 18840 | — |
| Northeast Clinical Trials Group | Scranton | Pennsylvania | 18510 | — |
| Preferred Primary Care Physicians | Uniontown | Pennsylvania | 15401 | — |
| Amherst Family Practice, P.C. | Winchester | Virginia | 22601 | — |
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 NCT07500506, 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 29, 2026 · Synced Apr 24, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT07500506 live on ClinicalTrials.gov.