Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Lyme Borreliosis: full-pipeline trial registry
1 of 2 indexed Lyme Borreliosis trials are currently recruiting.
Corpus placement: #7,188 of 28,707 conditions by registered trial count.
2 US clinical trials · 1 currently recruiting · #7,188 of 28,707 conditions by registered trial count
Lyme Borreliosis: 2 US clinical trials tracked, 1 recruiting.
Lyme Borreliosis is the subject of 2 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 1 in Phase 1-2 (earlier-stage). The most active sponsor is Pfizer, running 2 of these trials.
Enrollment posture brief
Registry condition lyme-borreliosis
OPEN 1 | RECR 50% | LATE 1 | EARLY 1 | RANK #7188 | SPON 2
Volume-matched condition peers
Nearest open-share peer: Abdominal Aortic Aneurysms (50% recruiting · 6 trials)
Lyme Borreliosis lists 1 open slots (50% of 2 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Lyme Borreliosis on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Lyme Borreliosis is recruiting above its size-band peers.
1 of 2 indexed trials (50%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
Open and recent trials
2 total, page 1 of 1
A Study to Learn About Different Dosing Schedules of a Lyme Disease Vaccine in Healthy Adults
Pfizer
NCT07226882
Phase 2 Study Of VLA15, A Vaccine Candidate Against Lyme Borreliosis, In A Healthy Pediatric And Adult Study Population
Pfizer
NCT04801420
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 1 |
| Phase 3 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Lyme Borreliosis records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Lyme Borreliosis trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Lyme Borreliosis page
2 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 Lyme Borreliosis trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Pfizer sponsors the most Lyme Borreliosis trials on record, review their full trial history before evaluating a specific study. See Pfizer's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Lyme Borreliosis condition card totals 2 registered trials; most-linked intervention VLA15; top US site state Pennsylvania. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.