UK volunteers test new ebola vaccine combo in Early-Stage trial

NCT ID NCT02451891

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 ยท Last updated Jun 27, 2026

Summary

This early-stage trial tested the safety and immune response of two experimental Ebola vaccines in 38 healthy UK adults. Some volunteers received one vaccine, while others got a prime-boost combination. The vaccines use harmless viruses to train the immune system against Ebola without causing the disease. The study was terminated early, but results help inform future Ebola vaccine development.

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

38 people

The number who actually took part.

Started

May 2015

Finished

Aug 2017

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 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: * Healthy adults aged 18 to 50 years * Able and willing (in the Investigator's opinion) to comply with all study requirements * Willing to allow the investigators to discuss the volunteer's medical history with their GP * For females only, willingness to practice continuous effective contraception (see section 6.3.3) during the study and a negative pregnancy test on the day(s) of screening and vaccination * Agreement to refrain from blood donation during the course of the study * Provide written informed consent Exclusion Criteria: * Participation in another research study involving receipt of an investigational product in the 30 days preceding enrolment, or planned use during the study period * Prior receipt of an investigational Ebola or Marburg vaccine, a chimpanzee adenovirus, or MVA vectored vaccine or any other investigational vaccine likely to impact on interpretation of the trial data * Receipt of any live, attenuated vaccine within 28 days prior to enrolment * Receipt of any subunit or killed vaccine within 14 days prior to enrolment * Administration of immunoglobulins and/or any blood products within the three months preceding the planned administration of the vaccine candidate * Any confirmed or suspected immunosuppressive or immunodeficient state, including HIV infection; asplenia; functional hyposplenism, recurrent, severe infections and chronic (more than 14 days) immunosuppressant medication within the past 6 months (inhaled and topical steroids are allowed) * History of allergic disease or reactions likely to be exacerbated by any component of the vaccine, including urticaria, respiratory difficulty or abdominal pain * Any history of hereditary angioedema, acquired angioedema, or idiopathic angioedema. * Any history of an anaphylactic reaction * Pregnancy, lactation or willingness/intention to become pregnant during the study * History of cancer (except basal cell carcinoma of the skin and cervical carcinoma in situ) * History of serious psychiatric condition * History of coeliac disease * Poorly controlled asthma or thyroid disease * Seizure in the past 3 years or treatment for seizure disorder in the past 3 years * Bleeding disorder (eg. Factor deficiency, coagulopathy or platelet disorder), or prior history of significant bleeding or bruising following IM injections or venepuncture * Any other serious chronic illness requiring hospital specialist supervision * Current anti-tuberculosis prophylaxis or therapy * Suspected or known current alcohol abuse as defined by an alcohol intake of greater than 42 units every week * Suspected or known injecting drug abuse in the 5 years preceding enrolment * Seropositive for hepatitis B surface antigen (HBsAg) * Seropositive for hepatitis C virus (antibodies to HCV) * Travel to a Ebola or Marburg endemic region during the study period or within the previous six months * Any clinically significant abnormal finding on screening biochemistry or haematology blood tests or urinalysis (see Appendix A) * Any other significant disease, disorder or finding 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 * Inability of the study team to contact the volunteer's GP to confirm medical history and safety to participate

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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.

Contacts and locations

Locations

  • Centre for Clinical Vaccinology and Tropical Medicine, Churchill Hospital

    Oxford, Oxfordshire, OX3 7LE, United Kingdom

More trials for these conditions

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