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AstraZeneca launches human tests for bird flu vaccines

NCT ID NCT07128615

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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 21, 2026 · Updated 3 times

Summary

This study tests two experimental vaccines, AZD4117 and AZD5315, designed to protect against certain strains of avian influenza (bird flu), specifically H5N1 and H7N9. Around 405 healthy adults will receive either a vaccine or a placebo to see if the vaccines are safe and trigger a strong immune response. The trial is currently active but not recruiting new participants.

What this could mean

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

Active substance
AZD4117 and AZD5315 vaccines
What this could lead to
If successful, these vaccines could help protect people against certain bird flu strains, potentially preventing a future pandemic.
What could go wrong
This is an early-phase trial focused on safety and immune response, not yet proven to prevent infection. The vaccines may not work as hoped or could cause side effects.

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 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

405 people

The number who actually took part.

Started

Sep 2025

Expected to finish

Dec 2026

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 years and older

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.

Key Inclusion Criteria: * Adults, ≥ 18 years of age at the time of signing the informed consent * Participants who are medically stable such that, according to the judgement of the Investigator, hospitalization within the study period is not anticipated and the participant appears likely to be able to remain on study through the end of protocol-specified follow-up. A stable medical condition is defined as disease not requiring significant change in therapy or hospitalization for worsening disease during the 3 months prior to enrollment * Written informed consent and any locally required authorization (eg, HIPAA in the US) obtained from the participant prior to performing any protocol-related procedures, including screening evaluations Key Exclusion Criteria: * History of hypersensitivity to any component of the IMP * History of hypersensitivity to penicillin and its derivatives * History of severe adverse reaction and/or severe allergic reaction (eg, anaphylaxis associated with a vaccine * Known or suspected congenital or acquired immunodeficiency * Abnormal findings on screening laboratory tests * Previous history of myocarditis, pericarditis, Guillain-Barré syndrome or any other demyelinating condition * Known or suspected autoimmune conditions as determined by history and/or physical examination * Receipt of any other type of seasonal influenza vaccination from 14 days before the first dose until 28 days after the administration of the last dose of IMP * Receipt of an mRNA vaccine within 28 days before administration of IMP * Receipt or expected receipt of any other type of licensed or investigational vaccine within 28 days prior to Visit 1 (D1) or Visit 5 (D58) * Receipt of immunoglobulin or blood products within 6 months prior to administration of study intervention or expected receipt during the study * Receipt of immune-modifying drugs or immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy within 6 months prior to enrollment (or expected receipt during study), or long-term systemic corticosteroid therapy (prednisolone or equivalent at a dose of ≥ 20 mg daily for more than 2 consecutive weeks) within 6 months prior to enrollment or expected receipt during study. Topical/inhaled steroids or short-term oral steroids are permitted * Participation in another trial, or receiving interventional Study IMP, in the preceding 90 days or expected receipt of another study intervention (or participation in another trial) during the period of study follow-up * Acute (time-limited) or febrile (temperature ≥ 38.0 °C \[100.4 °F\]) illness/infection within 3 days of intended IMP administration * Individuals who have had a previous confirmed or suspected illness from influenza caused by an H5N1 or H7N9 virus * Individuals who had household contact with and/or intimate exposure to an individual with laboratory confirmed H5N1 infection, exposure to infected household poultry/ wild birds/cattle or contaminated environments with sick and dead poultry or wild birds or cattle, within 60 days prior to enrollment * Female participants who are pregnant, lactating, or of childbearing potential and not using a highly effective method of contraception or abstinence from at least 4 weeks prior to IMP administration and until at least 6 months after IMP administration

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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

  • Research Site

    Long Beach, California, 90815, United States

  • Research Site

    Rolling Hills Estates, California, 90274, United States

  • Research Site

    Hialeah, Florida, 33012, United States

  • Research Site

    Stockbridge, Georgia, 30281, United States

  • Research Site

    Chicago, Illinois, 60640, United States

  • Research Site

    Lenexa, Kansas, 66219, United States

  • Research Site

    Kansas City, Missouri, 64114, United States

  • Research Site

    Omaha, Nebraska, 68134, United States

  • Research Site

    Las Vegas, Nevada, 89119, United States

  • Research Site

    Cincinnati, Ohio, 45212, United States

  • Research Site

    Edmond, Oklahoma, 73013, United States

  • Research Site

    North Charleston, South Carolina, 29405, United States

  • Research Site

    Austin, Texas, 78745, United States

  • Research Site

    West Jordan, Utah, 84088, United States

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