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NCT Number: NCT07275645

A Clinical Trial of Rabies Vaccine(Human Diploid Cell)for Human Use,Freeze-dried in a Population Aged 10 to 60 Years

A total of 3,000 participants will be enrolled, stratified by age into two groups: 600 participants aged 10-17 years and 2,400 participants aged 18-60 years. Within each age group, participants will be randomly assigned in a 1:1:1:1:1 ratio to one of five vaccination schedule groups: Essen Control Group (Group A), Essen Experimental Group (Group B), Zagreb Experimental Group (Group C), Simplified Four-Dose Group 1 (Group D), and Simplified Four-Dose Group 2 (Group E).

Among participants in the four experimental groups-Essen Experimental Group, Zagreb Experimental Group, Simplified Four-Dose Group 1, and Simplified Four-Dose Group 2-stratified block randomization will be applied. Within each age group and each vaccination schedule group, participants will be further randomized in a 1:1:1 ratio into three subgroups: those receiving a booster dose at Day 90 after completion of the primary immunization, those receiving a booster dose at Day 180, and those undergoing assessment of immune persistence at Day 360 after completion of the primary immunization.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

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Key information

Age range

10 year–60 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Qichun County Center for Disease Control and Prevention, Huanggang, Hubei, China

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Aged between 10 and 60 years at the time of enrollment.
  • The participant and/or their legal guardian voluntarily agrees to participate in the trial and signs the informed consent form.
  • The participant and their family are able to comply with the trial follow-up schedule as required by the protocol (no plans for extended absence or relocation from the study site).
  • Female participants are neither pregnant nor lactating (negative urine pregnancy test prior to vaccination), and have no plans to become pregnant within 2 months after enrollment.

Exclusion criteria

a Exclusion criteria for the first dose:

  • Axillary body temperature ≥37.3°C at screening.
  • History of rabies vaccination or administration of rabies-specific passive immunization products, or history of bites/scratches by dogs or other mammals within the past year.
  • History of severe allergic reactions requiring medical intervention to any vaccine or vaccine components, such as anaphylactic shock, allergic laryngeal edema, allergic purpura, Arthus reaction, severe urticaria, or angioedema.
  • Fever, acute or chronic infectious diseases (e.g., active tuberculosis, viral hepatitis), or acute exacerbation of chronic illness within 3 days before the first vaccine dose.
  • Receipt of blood, blood products, or immunoglobulins within 3 months prior to the first vaccine dose, or planned use of such products within 1 month after the final vaccine dose.
  • Receipt of any other vaccines within 14 days prior to the first vaccine dose.
  • Asplenia or functional asplenia due to any condition (e.g., splenectomy).
  • Diagnosed congenital or acquired immunodeficiency (including HIV infection), or treatment with immunosuppressive agents within the past 3 months (e.g., systemic corticosteroids for ≥14 days at doses ≥2 mg/kg/day or ≥20 mg/day of prednisone or equivalent).
  • Presence of severe congenital malformations, autoimmune (hereditary) diseases, or severe chronic conditions (including but not limited to: thalassemia, heart disease, kidney disease, diabetes, hereditary allergic constitution, Guillain-Barré syndrome, etc.)
  • Personal or family history of convulsions, epilepsy, encephalopathy, or psychiatric disorders.
  • Contraindications to intramuscular injection (e.g., diagnosed thrombocytopenia, any coagulation disorder, or current use of anticoagulant therapy).
  • Uncontrolled hypertension (e.g., systolic BP ≥160 mmHg and/or diastolic BP ≥100 mmHg at screening for adults aged 18 years and above).
  • Currently participating in another clinical trial involving investigational or unregistered products (drugs or vaccines), or planning to participate in another clinical trial before completion of this study.
  • Any condition that, in the opinion of the investigator, may interfere with the evaluation of the study objectives.

b Exclusion criteria for subsequent doses:

  • Positive urine pregnancy test;
  • Severe anaphylaxis after the previous dose;
  • Grade 4 adverse events associated with trial vaccination after the previous dose;
  • Exposure during the course (bite or scratch from dogs, cats or other mammals);
  • Participant has any other conditions that warrant discontinuation of vaccination as determined by the investigator.

Treatment and study plan

Rabies Vaccine(Human Diploid Cell)for Human Use,Freeze-dried

Biological

The vaccine will be administered via intramuscular injection into the deltoid muscle of the upper arm, with a human dose of 1.0 ml per injection. A total of 5 doses will be administered at Day 0, 3, 7, 14, and 28. Some participants will also undergo re-exposure immunization, receiving one additional dose of the vaccine on Days 0 and 3 of the re-exposure phase.

Primary outcomes

  1. Seroconversion rate and geometric mean concentration (GMC) of rabies virus neutralizing antibodies in baseline seronegative participants 14 days after the first dose.

    Time frame: Day 14 after the first dose.

  2. Seroconversion rate of rabies virus neutralizing antibodies in baseline seronegative participants 14 days after the last dose.

    Time frame: Day 14 after the last dose.

  3. Incidence of adverse events within different timeframes (30 minutes, 0-7 days, 0-30 days) after each vaccine dose.

    Time frame: Within 30 minutes, 0-7 days, and 0-30 days after each dose

  4. All serious adverse events (SAEs) occurring from the first dose of primary immunization to 6 months after completion of the primary immunization.

    Time frame: From the first dose of primary immunization to 6 months after completion

Secondary outcomes

  1. Geometric mean concentration (GMC) of rabies virus neutralizing antibodies in baseline seronegative participants 14 days after the last dose.

    Time frame: Day 14 after the last dose

  2. Comparison of seroconversion rates and GMCs among baseline seronegative participants in the Essen Experimental Group, Simplified Four-Dose Group 1, and Simplified Four-Dose Group 2 at Days 28 and 42 after the first dose.

    Time frame: Days 28 and 42 after the first dose

  3. Comparison of seroconversion rates and GMCs in baseline seronegative participants between the Essen Experimental Group and the Zagreb Experimental Group at Day 7 after the first dose.

    Time frame: Day 7 after the first dose

Other outcomes

  1. Seropositivity rate and GMC of rabies virus neutralizing antibodies in a subset of participants at 90 days, 180 days, and 360 days after completion of the primary immunization.

    Time frame: 90, 180, and 360 days post-primary immunization

  2. Seropositivity rate and GMC in a subset of participants at 14, 42, 90, and 180 days after the first dose of re-exposure immunization.

    Time frame: 14, 42, 90, and 180 days after re-exposure immunization

Sponsors and collaborators

Lead sponsor

Ab&B Bio-tech Co., Ltd.JS

Other

Registry information

Official study title

A Phase III, Randomized, Blinded, and Homologous Vaccine-Controlled Clinical Trial to Evaluate the Immunogenicity and Safety of the Rabies Vaccine (Human Diploid Cell), Freeze-dried, Vaccinated With Different Immunization Schedules in a Population Aged 10 to 60 Years

Important dates

Study start
2026
Primary completion
2026
Study completion
2027
First posted
Dec 10, 2025
Registry last updated
Mar 31, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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