Vaxart
Vaxart sponsors 19 registered US clinical trials on ClinicalTrials.gov, none currently recruiting, and 16 completed. 0 of these trials are in Phase 3-4 (later-stage) and 19 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Norovirus Infections, with 1 trials.
Trial Pipeline
19 total, page 1 of 1
A Trial of a Norovirus G1.1 and G2.4 Vaccine Administered Orally to Healthy Participants Aged ≥ 18 Years and ≤ 80 Years Old
NCT06944717
A Study to Evaluate VXA-CoV2-3.3 COVID-19 Vaccine Against Currently Approved/Authorized mRNA COVID-19 Injectable Booster Vaccine in Adults Previously Immunized Against COVID-19 Infection
NCT06672055
A Study to Determine the Safety and Immunogenicity of Bivalent GI.1 and GII.4 Vaccines in Healthy Volunteers
NCT05626803
A Phase 1, Open-label, Safety and Immunogenicity Study of an Oral Multi-dose Administration Regimen With an Adenoviral-vector Based Tablet Norovirus Vaccine (VXA-G1.1-NN) Administered to Healthy Adult Volunteers
NCT05213728
Norovirus Challenge Study
NCT05212168
A Ph 2 Trial With an Oral Tableted COVID-19 Vaccine
NCT05067933
Immunogenicity & Safety Study of Adenovirus Type 5 (AD5) Based Oral Norovirus Vaccines
NCT04875676
Ph 1b: Safety & Immunogenicity of Ad5 Based Oral Norovirus Vaccine
NCT04854746
Safety and Immunogenicity Trial of an Oral SARS-CoV-2 Vaccine (VXA-CoV2-1) for Prevention of COVID-19 in Healthy Adults and Boost (VXA-CoV2-1.1-S) at 1 Year Post Initial Vaccination in Subset of Subjects
NCT04563702
Safety & Immunogenicity Study of Ad5 Based Oral Norovirus Vaccines
NCT03897309
Dose-Optimization Trial of VXA-G1.1-NN in Healthy Volunteers
NCT03125473
Pharmacodynamic Open-Label Trial With VXA-A1.1 Oral H1 Vaccine in Healthy Adults
NCT03121339
A Phase 2 Influenza A Challenge Study Following Oral Administration of an H1N1 HA Ad-Vector Seasonal Flu Vaccine
NCT02918006
Phase 1 Placebo-controlled, Randomized Trial of an Adenoviral-vector Based Norovirus Vaccine
NCT02868073
Dose-Ranging Trial of Safety & Immunogenicity of an Oral Adenoviral-Vector Based RSV Vaccine (VXA-RSV-f)
NCT02830932
Immunogenicity of Seasonal Influenza by Delivery Directly to Ileum
NCT01761123
Safety Study of an Oral Vaccine to Prevent Seasonal Influenza
NCT01688297
Immunogenicity of ND1.1 by Delivery Directly to the Ileum
NCT01698060
Safety Study of an Oral Vaccine to Prevent Avian Influenza
NCT01335347
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 15 |
| Phase 2 | 4 |
Therapeutic Areas
What the Pipeline for Vaxart Shows
According to the ClinicalTrials.gov registry, Vaxart is linked to 19 US clinical trials across every stage of research activity. Of those, 0 studies are currently recruiting, about 0% of the sponsor's indexed portfolio, and 16 are already marked complete, representing roughly 84% of the total.
The phase mix for Vaxart reports 0 late-stage studies (Phase 3 and Phase 4 combined) and 19 earlier-phase studies (Phase 1 and Phase 2).
The top therapeutic focus area indexed for Vaxart is Norovirus Infections with 1 linked trial, and 5 other condition areas appear in the top list above.
How to read these pipeline numbers
Recruiting share is one of the more practical signals here: it reflects how much of a sponsor's research is presently open to new participants, while the completed share indicates the depth of finished work that has already contributed registry results. Both counts come directly from the public ClinicalTrials.gov dataset and are refreshed on the registry side; this page mirrors the latest data pull without altering it.
A portfolio weighted toward Phase 3 usually reflects an organization advancing candidates toward regulatory review, where the research centers on comparative efficacy and broader safety across larger populations. A heavier Phase 1 and Phase 2 tilt generally indicates exploratory work, safety, dosing, and early signal detection, and is common among research-forward sponsors that seed many early programs. Phase 4 entries, when present, track interventions already in real-world use and typically focus on long-term safety, effectiveness across subgroups, or formulation comparisons.
That distribution is a quick read of where the organization concentrates its research attention; it does not imply product availability, market share, or any clinical endorsement. All numbers on this page come from ClinicalTrials.gov maintained by the National Library of Medicine, and counts can shift as new studies are registered or existing ones update their status. This information is provided for reference and educational purposes only, not as medical, investment, or regulatory advice, verify current details directly with ClinicalTrials.gov before relying on any figure here.
Read our methodology - how this data is sourced, computed, and verified.
Related
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This page aggregates every registered trial from this sponsor, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.