New vaccine trial aims to shield teens and adults from whooping cough
NCT ID NCT07492303
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-stage trial is testing a new combination vaccine that protects against whooping cough, diphtheria, and tetanus (Tdap) in people aged 10 and older. Researchers want to see if different doses are safe and trigger an immune response. The study involves 96 volunteers and compares the vaccine to a placebo.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Tdap vaccine (acellular pertussis, diphtheria, tetanus combined)
- What this could lead to
- If successful, this could lead to a new, safe vaccine option to protect adolescents and adults from whooping cough, diphtheria, and tetanus.
- What could go wrong
- This is an early Phase 1 trial with only 96 participants, so it's too soon to know if the vaccine works. The main goal is safety, and unexpected side effects are possible.
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
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 96 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Aug 2027
An estimate. End dates often move.
- Lead sponsor
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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
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10 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * People aged 10 years or older; * Study participants and/or their guardians/authorized representatives are willing to provide valid identity certification documents of the study participants and/or their guardians/authorized representatives; * Informed consent of the study participants themselves and/or their guardians/authorized representatives shall be obtained, and informed consent forms shall be signed; * Study participants themselves and/or their guardians/authorized representatives are able and willing to comply with the requirements of the clinical trial protocol and complete all trial follow-up visits; * Study participants aged 10 to 11 years have not received any vaccine containing any component of Diphtheria, Tetanus and Pertussis within 3 years; - study participants aged 12 years or older have not received any vaccine containing any component of Diphtheria, Tetanus and Pertussis within 5 years; * Women of childbearing potential have used effective contraceptive measures within 2 weeks prior to enrollment in this trial, have a negative urine pregnancy test before administration of the investigational vaccine (pregnancy test may be waived for non-childbearing potential women), and voluntarily agree to use effective contraceptive measures within 6 months after vaccination; male study participants must agree to use effective contraceptive methods with their female partners within 6 months after vaccination. Exclusion Criteria: * Axillary body temperature \>37.0°C on the day of enrollment of trial participants; * Female trial participants who are breastfeeding or pregnant, or trial participants or their partners who plan to conceive within 6 months; * Persons with severe cardiovascular diseases, uncontrolled hypertension (e.g., systolic blood pressure ≥140 mmHg and/or diastolic blood pressure ≥90 mmHg for trial participants aged 18-59 years before enrollment, or systolic blood pressure ≥160 mmHg and/or diastolic blood pressure ≥100 mmHg for trial participants aged 60 years and above) or other severe chronic diseases (for persons aged 18 years and above); * Persons with clinically significant abnormal results of pre-vaccination tests of blood routine, blood biochemistry, urine routine, and coagulation function indicators who are deemed unsuitable for vaccination by the investigator after comprehensive evaluation; * Persons with a confirmed history of diphtheria, tetanus, or pertussis within the past 5 years; or persons who have had close contact with individuals diagnosed with pertussis, diphtheria, or tetanus within the past 30 days; * Persons who have experienced persistent cough ≥14 days without fever in the absence of other specific etiologies (e.g., influenza) within the past 6 months; * Persons known to be allergic to any component of the investigational vaccine used in this clinical trial, or who had allergic reactions following previous administration of the same type of vaccine; persons with a history of severe allergy to any vaccine or drug, including but not limited to severe urticaria, anaphylactic shock, dyspnea, angioneurotic edema, anaphylactoid purpura, local allergic necrotizing reaction (Arthus reaction), etc.; * Persons with a history or family history of convulsions, epilepsy, encephalopathy (e.g., brain nerve tissue damage caused by congenital brain dysplasia, brain trauma, brain tumor, cerebral hemorrhage, cerebral infarction, brain infection, chemical drug poisoning, etc.), or mental illness; * Persons with primary or secondary immune impairment (e.g., severe history of or resection of thyroid, pancreas, liver, spleen, or kidney diseases, autoimmune diseases, malignant tumors, or requiring treatment for thyroid immune dysfunction diseases within the past 12 months); * Long-term use of immunosuppressants or other immunomodulatory drugs within 3 months before enrollment (e.g., prednisone or equivalent dose of similar drugs used at ≥0.5 mg/kg/day for trial participants aged 10-17 years, or ≥20 mg/day for trial participants aged 18-60 years, for 14 consecutive days or more); * Persons diagnosed by a physician with coagulation abnormalities (e.g., coagulation factor deficiency, coagulopathy, platelet abnormalities) or coagulation disorders; * Persons who have received immune globulin, blood or blood-related products within the past 3 months, plan to use such products during the trial, or have a history of blood transfusion within the past 3 months; * Persons with any acute infectious disease, febrile illness (axillary body temperature ≥38.0°C), cardiopulmonary disease (frequently occurring asthma), acute exacerbation of chronic diseases, or use of antipyretic, analgesic or antiallergic drugs within 3 days before vaccination; * Persons who have received other investigational drugs or vaccines within 1 month before vaccination, or plan to participate in or are currently participating in any other clinical trials; * Persons who have received live attenuated vaccines within 14 days before vaccination, or subunit vaccines or inactivated vaccines within 7 days before vaccination; * Persons with any other factors deemed unsuitable for participation in the clinical trial by the investigator.
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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.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a new vaccine shield older kids and adults from three deadly infections?