Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Meningococcal Infection: early-phase trial registry
1 of 4 indexed Meningococcal Infection trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #4,115 of 28,707 conditions by registered trial count.
4 US clinical trials · 1 currently recruiting · #4,115 of 28,707 conditions by registered trial count
Meningococcal Infection: 4 US clinical trials tracked, 1 recruiting.
Meningococcal Infection is the subject of 4 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most active sponsor is Sanofi Pasteur, a Sanofi Company, running 4 of these trials.
Enrollment posture brief
Registry condition meningococcal-infection
OPEN 1 | RECR 25% | LATE 1 | EARLY 2 | RANK #4115 | SPON 4
Volume-matched condition peers
Nearest open-share peer: Abdominal Cancer (25% recruiting · 8 trials)
Meningococcal Infection lists 1 open slots (25% of 4 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 Meningococcal Infection 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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Meningococcal Infection is recruiting below its size-band peers.
1 of 4 indexed trials (25%) 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
4 total, page 1 of 1
Observational, Passive Surveillance Program to Collect Information on Women and Their Offspring Exposed to MenQuadfi® During Pregnancy, in United States (US)
Sanofi Pasteur, a Sanofi Company
NCT04843111
Study of Menactra® in Healthy Subjects at 9 Months and Concomitantly With Pentacel® at 15 to 18 Months of Age
Sanofi Pasteur, a Sanofi Company
NCT01659996
A Study of a Quadrivalent Meningococcal Tetanus Protein Conjugate Vaccine in Infants and Toddlers
Sanofi Pasteur, a Sanofi Company
NCT01049035
Persistence of Antibodies in Children Aged 7 to 15 Years Who Previously Received One Dose of Menactra® or Menomune®
Sanofi Pasteur, a Sanofi Company
NCT00258856
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 2 |
| Phase 4 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Meningococcal Infection records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Meningococcal Infection 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 Meningococcal Infection page
4 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 Meningococcal Infection trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Sanofi Pasteur, a Sanofi Company sponsors the most Meningococcal Infection trials on record, review their full trial history before evaluating a specific study. See Sanofi Pasteur, a Sanofi Company'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 Meningococcal Infection condition card totals 4 registered trials; most-linked intervention Diphtheria and Tetanus Toxoids and Acellular Pertussis Adsorbed, Inactivated Poliovirus and Haemophilus b Conjugate; top US site state Pennsylvania. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.