New rabies vaccine could cut shots from three visits to one

NCT ID NCT07168018

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a new experimental rabies vaccine (ChAdOx2 RabG) given together with the standard rabies vaccine in healthy adults aged 18-45. The goal is to see if this combination is safe and produces a strong immune response, potentially allowing a single visit instead of the usual three. Forty participants in a rabies-endemic country will be enrolled.

What this could mean

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

Active substance
ChAdOx2 RabG (experimental rabies vaccine) and inactivated rabies vaccine (Verorab)
What this could lead to
If successful, this could lead to a simpler, single-visit rabies vaccination schedule, improving access in endemic areas.
What could go wrong
This is an early phase II trial with only 40 participants, so results may not apply broadly. Safety and immune response are still being evaluated.

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 40 people

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

Expected to start

Dec 2025

An estimate. Start dates often move.

Expected to finish

Mar 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Ages

18 to 45 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: * Healthy male or female adults aged 18-45 years at the time of enrolment with signed consent. * (Female only participants): Must be non-pregnant (as demonstrated by a negative serum pregnancy test) and willing to use an effective form of contraception. \*Female volunteers are required to use an effective form of contraception during the course of the study. There is currently no information about the effect of this vaccine on a foetus. Acceptable forms of contraception for female volunteers include: * Established use of injected or implanted hormonal methods of contraception. * Placement of an intrauterine device (IUD) or intrauterine system (IUS). * Total abdominal hysterectomy. * Planned long-term (at least 2 months from the date of the first vaccination) or permanent residence in Bagamoyo town. * Adults with a Body Mass Index (BMI) 18 to 30 Kg/m2 * Correctly answer all 10 questions on the protocol and study procedures understanding questionnaire within 2 attempts. Exclusion Criteria: * Clinically significant congenital abnormalities as judged by the PI or other delegated individual. * Clinically significant history of skin disorder, allergy, cardiovascular disease, respiratory disease, endocrine disorder, liver disease, renal disease, gastrointestinal disease and neurological illness which may significantly increase the risk to the volunteer because of participation in the study, affect the ability of the volunteer to participate in the study or impair interpretation of the study data as judged by the PI or other delegated individual. * Any confirmed or suspected immunosuppressive or immunodeficient state, including HIV infection; asplenia; recurrent, severe infections and chronic (more than 14 days) immunosuppressant medication within the past 6 months (inhaled and topical steroids are allowed). * History of cancer (except basal cell carcinoma of the skin and cervical carcinoma in situ). * History of allergic disease or reactions likely to be exacerbated by any component of the vaccines, including IRVs e.g. amphotericin B, chlortetracycline, neomycin, polymyxin, streptomycin * Any history of anaphylaxis in relation to vaccination. * Clinically significant laboratory abnormality as judged by the PI or other delegated individual. * Receipt of any previous rabies vaccinations, including an incomplete course of IRV and/or any doses of ChAdOx2 RabG. * History of vaccination with previous adenoviral vectored vaccines in the 6 months prior to enrolment in the study, or of vaccination with any other vaccine (including non-adenovirus-vectored COVID-19 vaccines) in the 28 days prior to enrolment. * Planned / likely receipt of any other vaccine within 28 days after enrolment. * History of bleeding disorder (e.g., factor deficiency, coagulopathy or platelet disorder), or prior history of significant bleeding or bruising following IM injections or venepuncture, or continuous anticoagulation e.g., with warfarin * History of confirmed major thrombotic event, (including cerebral venous sinus thrombosis, deep vein thrombosis, pulmonary embolism) or, * History of antiphospholipid syndrome. * History of prior receipt of unfractionated heparin * History of heparin induced thrombocytopenia * Receipt of any blood products/ immunoglobulins within the three months preceding the planned administration of the vaccine candidate. * Participation in another research study involving receipt of an investigational product in the 30 days preceding enrolment, or planned use during the study period. * Seropositive for hepatitis B surface antigen (HBsAg) or hepatitis C (HCV IgG). * Likelihood of travel away from the study area. * Female participant who is pregnant, lactating or planning pregnancy during the course of the trial. * Scheduled elective surgery or other procedures requiring general anaesthesia during the trial. * Any other significant disease, disorder or situation which, in the opinion of the Investigator, may either put the participants at risk because of participation in the trial, or may influence the result of the trial, or the participant's ability to participate in the trial. * Contraindication to use of paracetamol

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Rabies are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

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

  • Ifakara Health Institute

    Bagamoyo, Tanzania

More trials for these conditions

Other studies related to the condition(s) this trial covers.