New marburg vaccine trial launches: could it stop the deadly virus?

NCT ID NCT07425821

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-stage trial tests a new vaccine (rVSVΔG-MARV-GP) to see if it is safe and triggers an immune response against Marburg virus, a rare but severe disease. About 112 healthy adults aged 18-50 will receive either the vaccine or a placebo. The study focuses on side effects and antibody levels over several months.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 112 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2026

Expected to finish

Jul 2028

An estimate. End dates often move.

Lead sponsor

A research network

The lead sponsor is a research network or cooperative group.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 50 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria 1. Adults in good general health 2. Participants who are 18 to 50 years of age 3. Willing to comply with the requirements of the protocol and available for follow-up for the planned duration of the study 4. Willing to undergo HIV testing, risk reduction counseling, and receive HIV test results 5. All sexually active participants must consistently use male or female condoms with all sexual partners for 3 months following IP administration 6. All individuals of childbearing potential engaging in sexual activity that could lead to pregnancy must commit to use an effective method of contraception from at least 2 weeks before and continue until 3 months following receipt of vaccine/placebo 7. All individuals of childbearing potential must be willing to undergo urine pregnancy tests at time points indicated in the Schedule of Activities (SOA) 8. All participants must be willing to forgo donation of blood or any other tissues from screening onward throughout the course of the study Exclusion Criteria 1. Any clinically relevant abnormality on history or examination including: history of immunodeficiency or autoimmune disease history of splenectomy history of malignancy in the past 5 years use of corticosteroids, immunosuppressive, anticancer, or other medications considered significant by the Investigator within the previous 6 months body mass index (BMI) ≥ 35.0 kg/m2 2. Any clinically significant acute or chronic medical condition that is considered progressive or in the opinion of the Investigator makes the participant unsuitable for participation in the study 3. Individuals who are pregnant or breastfeeding 4. Bleeding disorder that was diagnosed by a physician 5. Infectious disease: Confirmed HIV-1 or HIV-2 infection, chronic active hepatitis B infection, current hepatitis C infection, active syphilis, or medically diagnosed long COVID 19 Syndrome. Also excluded are participants with active, serious infections requiring parenteral antibiotic, antiviral, or antifungal therapy within 30 days prior to enrollment. 6. Any abnormal laboratory parameters at screening per protocol. 7. Receipt of live attenuated influenza vaccine within the previous 14 days, any other live attenuated vaccine within the previous 30 days or planned receipt within 30 days after vaccination with IP; or receipt of non-live attenuated vaccine within the previous 14 days or planned receipt within 14 days after vaccination with IP, including COVID-19 vaccines 8. Receipt of blood transfusion or blood-derived products within the previous 3 months 9. Prior potential exposure to Marburg Virus, or a medical history of hemorrhagic fever 10. Prior receipt of any VSV-vectored vaccine, any Marburg vaccine, or any vaccine containing a filovirus component. Prior receipt of monoclonal or polyclonal antibodies directed against Marburg or other filovirus in the past 12 months 11. Current participation in another clinical trial, within 3 months prior to enrollment. 12. History of severe local or systemic reactogenicity to vaccines, or severe allergy to food or medications, and/or allergy to any component of this vaccine. 13. Neuropsychiatric condition or substance abuse that compromises safety of the participant and precludes compliance with the protocol 14. Current or planned occupational (medical care, childcare) or household contact (residing in the same household) from screening through 3 months after IP administration with any individual at increased risk from exposure to a live viral vaccine including infants ≤ 1 year of age, adults ≥75 years of age, or immunocompromised individuals. 15. In the opinion of the PI, it is not in the best interest of the participant to participate in the trial 16. A history of long-term treatment (≥ 4 weeks) for arthritis 17. Participants currently experiencing a rash or who have a history of severe, chronic, or frequent rash will be excluded.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • George Washington University

    RECRUITING

    Washington D.C., District of Columbia, 20052, United States

  • Johnson County Clin-Trials

    RECRUITING

    Lenexa, Kansas, 66219, United States

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