Pfizer's lyme vaccine gets a booster: will a 5th dose seal protection?
NCT ID NCT07500506
First seen Apr 01, 2026 · Last updated May 24, 2026 · Updated 9 times
Summary
This study tests a fifth dose of Pfizer's Lyme disease vaccine (VLA15) in healthy people aged 7 and older who already received four doses. The goal is to see if the booster is safe and boosts the immune system's ability to fight Lyme disease. Participants will get either the vaccine or a placebo and be followed for about a year.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Allegheny Health and Wellness Pavilion
RECRUITINGErie, Pennsylvania, 16506, United States
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Altoona Center For Clinical Research
RECRUITINGDuncansville, Pennsylvania, 16635, United States
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Amherst Family Practice, P.C.
NOT_YET_RECRUITINGWinchester, Virginia, 22601, United States
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Central Erie Primary Care
RECRUITINGErie, Pennsylvania, 16508, United States
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Diex Recherche Inc. Division Sherbrooke
RECRUITINGSherbrooke, Quebec, J1L 0H8, Canada
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Frontier Clinical Research, LLC
RECRUITINGScottdale, Pennsylvania, 15683, United States
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Frontier Clinical Research, LLC
RECRUITINGSmithfield, Pennsylvania, 15478, United States
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Hunterdon Medical Center
NOT_YET_RECRUITINGFlemington, New Jersey, 08822, United States
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Milestone Research Inc.
NOT_YET_RECRUITINGLondon, Ontario, N5W 6A2, Canada
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Northeast Clinical Trials Group
RECRUITINGScranton, Pennsylvania, 18510, United States
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Northern Light Eastern Maine Medical Center
NOT_YET_RECRUITINGBangor, Maine, 04401, United States
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Northern Light Family Medicine and Residency Center
NOT_YET_RECRUITINGBangor, Maine, 04401, United States
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Preferred Primary Care Physicians
NOT_YET_RECRUITINGUniontown, Pennsylvania, 15401, United States
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Preferred Primary Care Physicians, Preferred Clinical Research (Ofc 18)
RECRUITINGPittsburgh, Pennsylvania, 15236, United States
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Preferred Primary Care Physicians, Preferred Clinical Research - St.Clair
NOT_YET_RECRUITINGPittsburgh, Pennsylvania, 15243, United States
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Robert Packer Hospital
RECRUITINGSayre, Pennsylvania, 18840, United States
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Smith Allergy & Asthma Specialists
RECRUITINGHorseheads, New York, 14845, United States
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Smith Allergy and Asthma Specialists
RECRUITINGCortland, New York, 13045, United States
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Stouffville Medical Research Institute Inc.
NOT_YET_RECRUITINGStouffville, Ontario, L4A 1H2, Canada
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The University of Vermont Medical Center Inc.
NOT_YET_RECRUITINGBurlington, Vermont, 05401, United States
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University of Massachusetts Chan Medical School
RECRUITINGWorcester, Massachusetts, 01655, United States
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Velocity Clinical Research, Providence
NOT_YET_RECRUITINGEast Greenwich, Rhode Island, 02818, United States
Conditions
Explore the condition pages connected to this study.