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ClinicalTrials.gov 4 recruiting now early-phase tilt small index

COVID Long-Haul: early-phase trial registry

4 of 5 indexed COVID Long-Haul trials are currently recruiting, with more weight in Phase 1-2.

Corpus placement: #3,391 of 28,707 conditions by registered trial count.

5 US clinical trials · 4 currently recruiting · #3,391 of 28,707 conditions by registered trial count

COVID Long-Haul: 5 US clinical trials tracked, 4 recruiting.

COVID Long-Haul is the subject of 5 registered US clinical trials on ClinicalTrials.gov, 4 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 1 in Phase 1-2 (earlier-stage). The most active sponsor is San Francisco Veterans Affairs Medical Center, running 1 of these trials.

Enrollment posture brief

Registry condition covid-long-haul

OPEN 4 | RECR 80% | LATE 0 | EARLY 1 | RANK #3391 | SPON 1

Nearest open-share peer: Acute Leukemia of Ambiguous Lineage (80% recruiting · 10 trials)

Ablation80%ACL Reconstruction80%COVID Long-Haul (this)80%Abuse, Drug60%Acceptability60%
Open-enrollment share among volume-matched conditions near COVID Long-Haul

COVID Long-Haul lists 4 open slots (80% of 5 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 COVID Long-Haul 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.

  1. COVID Long-Haul is recruiting above its size-band peers.

    4 of 5 indexed trials (80%) 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.

  2. One sponsor concentrates COVID Long-Haul research.

    San Francisco Veterans Affairs Medical Center accounts for 1 of 5 trials (20%). 5 distinct sponsors appear on at least one study for this condition label.

  3. Typical COVID Long-Haul enrolment sits around 150 participants.

    Median target enrolment is 150 among the 5 trials that report a genuine target (sentinel values excluded). 1 of those (20%) plan for fewer than 100 participants.

  4. COVID Long-Haul research is mostly interventional.

    4 interventional and 1 observational studies make up this index (80% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 11

Phase Distribution

PhaseTrial count
Phase 1 1

Named interventions

Most-linked intervention names on COVID Long-Haul records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

[11C]CPPC Injection Drug
1 trials
cross-sectional MRI and EEG assessments (NO INTERVENTION) Other
1 trials
Mind Body Intervention #1 Behavioral
1 trials
Structured mindfulness intervention Behavioral
1 trials
percutaneous electrical nerve-field stimulation, PENFS (COVID active device) Device
1 trials
percutaneous electrical nerve-field stimulation, PENFS (sham device) Device
1 trials
percutaneous electrical nerve-field stimulation, PENFS Device
1 trials

US sites by state

Facility locations filed on COVID Long-Haul trials. A trial with sites in several states counts in each.

California 2 trials
New York 1 trials
Maryland 1 trials
Massachusetts 1 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

What to do with this COVID Long-Haul page

5 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

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 COVID Long-Haul condition card totals 5 registered trials; most-linked intervention [11C]CPPC Injection; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.