Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 2, 2026, 2:17 AM EDT

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Showing 1–8 of 8 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Lyme Disease
Interventions
VLA15, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
7 Years and older
Enrollment
1,712 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
19
States / cities
Bangor, Maine • Worcester, Massachusetts • Flemington, New Jersey + 13 more
Conditions
Lyme Borreliosis
Interventions
VLA15, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 65 Years
Enrollment
572 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
6
States / cities
Milford, Connecticut • Stamford, Connecticut • Binghamton, New York + 3 more
Conditions
Lyme Borreliosis
Interventions
VLA15, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 44 Years
Enrollment
207 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
6
States / cities
Warren Township, New Jersey • Cortland, New York • Horseheads, New York + 3 more
Conditions
Lyme Disease
Interventions
VLA15, Saline
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
5 Years and older
Enrollment
12,546 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
82
States / cities
Essex, Connecticut • Ledyard Center, Connecticut • New London, Connecticut + 67 more
Conditions
Lyme Borreliosis, Nervous System
Interventions
VLA15 with Alum, VLA15 without Alum
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 39 Years
Enrollment
179 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
4
States / cities
La Mesa, California • Lincoln, Nebraska
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety Study of a Vaccine to Help Protect Against Lyme Disease in Healthy Children

NCT05634811
Conditions
Lyme Disease
Interventions
VLA15, Normal Saline
Biological · Other
Lead sponsor
Pfizer
Industry
Eligibility
5 Years to 17 Years
Enrollment
3,547 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
65
States / cities
Birmingham, Alabama • Guntersville, Alabama • Bellflower, California + 55 more
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Alternative Schedule Study For VLA15, a Vaccine Candidate Against Lyme Borreliosis

NCT03970733
Conditions
Lyme Borreliosis
Interventions
VLA15, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 65 Years
Enrollment
246 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
5
States / cities
Milford, Connecticut • Stamford, Connecticut • Binghamton, New York + 2 more
Conditions
Lyme Borreliosis
Interventions
VLA15, Placebo
Biological
Lead sponsor
Pfizer
Industry
Eligibility
5 Years to 65 Years
Enrollment
625 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
19
States / cities
Bridgeport, Connecticut • Stamford, Connecticut • Waterbury, Connecticut + 12 more