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New plague vaccine enters human testing

NCT ID NCT07207408

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study tests a new vaccine called rF1V-1018 to prevent pneumonic plague, a severe lung infection spread by aerosol. Researchers will give the vaccine to 148 healthy adults aged 18 to 55 to check if it triggers a strong immune response and is safe. The goal is to find the best dose and schedule for future larger trials.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
rF1V-1018 vaccine
What this could lead to
If successful, this could lead to a vaccine that protects people from pneumonic plague, a rare but deadly lung infection caused by Yersinia pestis.
What could go wrong
This is an early Phase 2 trial with only 148 participants, so results may not apply to everyone. The vaccine may not produce strong enough immunity or could have side effects.
Why investors are watching

Dynavax is testing a vaccine called rF1V-1018 in a Phase 2 trial with 148 adults aged 18 to 55. The trial checks whether the vaccine triggers an immune response and is safe. For a small company like Dynavax, this readout could shape its pipeline value and future plans.

If it works: If the vaccine shows a strong immune response and a good safety profile, Dynavax could advance it to a larger trial. That progress might attract partners or funding for further development.

If it fails: The vaccine could fail to produce a strong immune response or cause safety problems, which would likely end this program. Trials at this stage often fail, so a negative result would remove a potential asset from Dynavax's pipeline.

AI-written from the trial record. Speculative, and not investment advice.

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 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 148 people

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

Started

Sep 2025

Expected to finish

Aug 2027

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Ages

18 to 55 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 18 to 55 years of age 2. Healthy participants or participants with stable pre-existing medical conditions Pre-existing stable medical condition means a participant who: has full capacity of daily activity and no major medication modification within 3 months prior to Day 1; has not undergone surgical or minimally-invasive intervention or had any hospitalization/emergency room visit for the specific medical condition. 3. Able to comply with the protocol schedule and procedures 4. Able and willing to provide written informed consent 5. If female of child-bearing potential and heterosexually active, has practiced adequate contraception for at least 28 days prior to vaccination, has negative pregnancy tests just prior to vaccination, and has agreed to continue adequate contraception through three months following the final trial injection A premenopausal woman who has at least one of the following is considered not of childbearing potential: 1. Documented hysterectomy 2. Documented bilateral salpingectomy 3. Documented bilateral oophorectomy 4. Documented and current bilateral tubal ligation or occlusion Exclusion Criteria: 1. A history of plague disease or have previously received any plague vaccine 2. Active tuberculosis or other systemic infectious process 3. History of human immunodeficiency virus (HIV), hepatitis B (HBV) or hepatitis C (HCV) infection, or positive test for antibody to HIV, HBV, or HCV 4. History of autoimmune disorder 5. History of sensitivity to any component of trial vaccines 6. Body mass index ≥ 30 kg/m2 7. Has received the following prior to any trial injection: a) ≤ 14 days: i) Any licensed or authorized inactivated vaccines (including vaccines containing mRNA or CpG) b) ≤ 28 days: i) Any live vaccine ii) Any investigational medicinal agent c) ≤ 90 days: i) Chronic administration (defined as more than 14 consecutive days in total) of immunosuppressants or other immune-modifying drugs during the period starting 90 days prior to the first trial vaccine administration or planned administration during the trial period. (For corticosteroids, this will mean prednisone ≥20 mg/day, or equivalent). Inhaled, topical, and intraarticular steroids are allowed. ii) Granulocyte or granulocyte-macrophage colony stimulating factor iii) Immunoglobulins or any blood products (receipt of certain monoclonal antibodies may on a case-by-case basis be non-exclusionary if approved via consultation with Sponsor Medical Monitor) iv) Antisense oligonucleotides v) Drugs/investigational agents with very long half-lives (defined as ≥ 60 days) (eg, radioactive iodine, amiodarone, liraglutide, nirsevimab, teplizumab, evinacumab, and obinutuzumab) vi) Infusion of blood products d) At any time: DNA plasmids or other genetic therapy intended to integrate permanently into host cells 8. If female is pregnant (known before or established at the time of screening), breastfeeding, or planning breastfeeding or a pregnancy 9. Is undergoing chemotherapy or expected to receive chemotherapy during the trial period; has a diagnosis of cancer within the last 5 years other than squamous cell or basal cell carcinoma of the skin 10. History or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with participation for the full duration of the trial, or is not in the best interest of the participant to participate, in the opinion of the treating investigator 11. Oral temperature ≥ 38°C (≥ 100.4°F) at the time of vaccine administration 12. History of acute myocardial infarction (AMI) or documented coronary artery disease (CAD) \-

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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

    1 site. 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

  • 103

    ACTIVE_NOT_RECRUITING

    Miami, Florida, 33172, United States

  • AMR- El Dorado

    ACTIVE_NOT_RECRUITING

    El Dorado, Kansas, 67042, United States

  • AMR- Las Vegas

    ACTIVE_NOT_RECRUITING

    Las Vegas, Nevada, 889119, United States

  • CTI Clinical Research Center

    RECRUITING

    Cincinnati, Ohio, 45212, United States