An Efficacy, Safety, Tolerability, Immunogenicity, and Lot-Consistency Clinical Trial of a 6-Valent OspA-Based Lyme Disease Vaccine (VLA15)
Public ClinicalTrials.gov record NCT05477524. 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, Multicenter, Placebo-Controlled, Randomized, Observer-Blinded Trial to Evaluate the Efficacy, Safety, Tolerability, Immunogenicity, and Lot Consistency of a 6-Valent OspA-Based Lyme Disease Vaccine in Healthy Participants ≥5 Years of Age
Study identification
- NCT ID
- NCT05477524
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- Pfizer
- Industry
- Enrollment
- 12,547 participants
Conditions and interventions
Conditions
Not listed
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 5 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 3, 2022
- Primary completion
- Dec 25, 2025
- Completion
- Dec 25, 2025
- Last update posted
- Sep 28, 2025
2022 – 2025
United States locations
- U.S. sites
- 22
- U.S. states
- 4
- U.S. cities
- 17
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Care Access - Essex | Essex | Connecticut | 06426 | — |
| Care Access Mobile Site | New London | Connecticut | 06320 | — |
| Stamford Health Medical Group | Stamford | Connecticut | 06902 | — |
| Stamford Hospital | Stamford | Connecticut | 06904 | — |
| Northern Light Eastern Maine Medical Center | Bangor | Maine | 04401 | — |
| Care Access - Farmington | Farmington | Maine | 04938 | — |
| Pen Bay Medical Center | Rockport | Maine | 04856 | — |
| Johns Hopkins | Baltimore | Maryland | 21205 | — |
| Johns Hopkins Hospital | Baltimore | Maryland | 21287 | — |
| Johns Hopkins Rockland Physician Practice and Research Group | Lutherville | Maryland | 21093 | — |
| Sumit Bhutani MD LLC | Westminster | Maryland | 21157 | — |
| Woodholme Gastroenterology Associates | Westminster | Maryland | 21157 | — |
| Pediatric Associates of Fall River | Fall River | Massachusetts | 02721 | — |
| Care Access - Lakeville | Lakeville | Massachusetts | 02347 | — |
| Care Access - Melrose | Melrose | Massachusetts | 02176 | — |
| ActivMed Practices and Research | Methuen | Massachusetts | 01844 | — |
| Care Access - Briarpatch and Mobile Site | Nantucket | Massachusetts | 02554 | — |
| Care Access - Nantucket | Nantucket | Massachusetts | 02554 | — |
| Care Access Mobile Site | Nantucket | Massachusetts | 02554 | — |
| South Shore Medical Center | Norwell | Massachusetts | 02061 | — |
| Care Access - Hingham | Rockland | Massachusetts | 02370 | — |
| Sisu BHR | Springfield | Massachusetts | 01103 | — |
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 NCT05477524, 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 Sep 28, 2025 · Synced May 18, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05477524 live on ClinicalTrials.gov.