ClinicalTrials.gg
CompletedNCT05937113Updated Jul 20, 2023

Safety and Immunogenicity of the Inactivated Rabies Vaccine RABIVAX-S Administered Intramuscularly and Intradermally

A Phase 4 interventional study of RABIVAX-S in Rabies, sponsored by Vietnam Military Medical University. Completed at 1 site in Vietnam. Open to participants aged 5 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-07-20.

Sponsored by Vietnam Military Medical University · Phase 4, Interventional, and Prevention

From the registry’s dates

  • Registered 3 years after the study started (first participant enrolled Jun 2020, registered Jun 2023).
Phase
Phase 4
Study type
Interventional
Enrollment
220
Allocation
Randomized
Ages
5 Years to 60 Years
Sex
All
01

Study summary

Randomized, open-label, prospective, before-and-after comparison study in the same group.

Subjects suitable for the study will be randomly assigned at a ratio of 1:1 (block 4) to use the study vaccine by one of two routes of administration: Intramuscular or Intramuscular. Previously-unvaccinated subjects receive three injections of vaccine on day 0, 7 and 21-28. The aim of the study is to evaluate the safety and immunogenicity of the inactivated rabies vaccine RABIVAX-S administered intramuscularly and intradermally according to a 3-dose regimen in healthy volunteers.

Read the detailed description

1 ml dose vaccine containing ≥ 2.5 IU of purified rabies antigen (Pitman-Moore rabies virus strain 3218; acclimatized and cultured on vero cells, inactivated with β propiolactone).

Pre-exposure prophylaxis regimens for two groups

  • Intramuscular 1ml on days D0, D7 and D21-28
  • Intradermal injection 0.1 ml on days D0, D7 and D21-28

Randomization was performed according to two age stratifications:

  • Stratification of research subjects from 5-15 years old
  • Stratification of research subjects from 16-60 years old Population selected research subjects in the community in Dong Hung district, Thai Binh province
02

Conditions studied

  • Rabies

Browse trials for

Keywords

  • Rabies
  • rabies vaccine
  • RABIVAX-S
03

In context

Rabies

114 studies on the registry are indexed under Rabies; 15 are open to participants now.

This study's enrollment of 220 is close to the median of 201 across 104 interventional studies indexed under Rabies.

Browse Rabies studies →

Lead sponsor

Vietnam Military Medical University is the lead sponsor of 8 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
5 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Healthy volunteers aged 5-60 years at the time of study screening.
  2. Consent to participate in the study by signing the consent to participate in the study after being provided with complete information about the study. The participation of research subjects under the age of 18 years will be signed by the legal guardian.
  3. Research subjects with normal health are determined according to personal medical history, clinical examination and laboratory tests within the clinically acceptable normal range.
  4. Able to follow the research process as assessed by the researcher.
  5. Women of reproductive age who have been using effective for at least 4 weeks prior to screening and are willing to continue contraception until at least 4 weeks after the last dose of the study vaccine together. Men participating in the study agreed not to conceive until at least 4 weeks after the last dose of the study vaccine.

Exclusion criteria

Exclusion Criteria:

  1. Subject is participating in any other clinical trial.
  2. Research facility staff working directly in this study and their families and relatives. Family, relatives are defined as spouses, parents, children or siblings, whether adopted or legally adopted.
  3. History of previous rabies vaccination (pre- or post-exposure regimen)
  4. Have received rabies immunoglobulin (human/equine) in the past.
  5. Fever (temperature ≥37°C) or moderate or severe acute illness, or infection on the day of vaccination.
  6. History of systemic reaction to any vaccine component or history of life-threatening reaction to an experimental vaccine or a vaccine containing any vaccine-like substance study.
  7. Have received any immunoglobulin, blood, or blood-based product therapy in the past 3 months, which may interfere with the assessment of immune response.
  8. Known seropositive status for antibody, antibody or surface antigen (HBsAg) (retest not required).
  9. Receive any vaccine in the 4 weeks before the first trial vaccine
  10. Expect to receive any vaccine for 4 weeks after the trial vaccine is administered.
  11. Women who are pregnant or have a positive urine test or are not willing to use safe methods of
  12. Women who are breastfeeding
  13. Participated in a clinical trial study within the past 3 months.
  14. Have a plan to donate blood while participating in the study
  15. History of or current drug or alcohol abuse within the past year.
  16. Congenital or acquired immunodeficiency, therapy such as antineoplastic chemotherapy or radiation within the previous 6 months, or long-term systemic therapy (Permission to use topical steroid/medication)
  17. Thrombocytopenia, bleeding disorders or anticoagulants in the 3 weeks prior to vaccination is intramuscularly (IM)
  18. Subjects at high risk of exposure to rabies during the study period, for example veterinary surgeons (including students at veterinary colleges), technical staff working with doctors veterinarians, laboratory staff handling rabies-contaminated material, abattoir staff, zoo staff.
  19. Subject plans to have surgery in the next 3 months.
  20. Subjects using antimalarial drugs concurrently
  21. acute or chronic conditions such as pulmonary, endocrine, , psychiatric, cardiovascular, liver or renal disease, as determined by medical history and physical examination and in the opinion of the researcher may affect the objectives of the study.
  22. Any other condition that, in the opinion of the researcher as a member, would jeopardize the safety or rights of the subject or prevent the subject from completing the protocol procedures study.
Terms in these criteria, in plain language(10)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
220 participants (actual)

Study arms

  • Experimental
    Safety of a 3-dose regimen of RABIVAX-S in healthy participants aged 5 to 60 years

    RABIVAX-S is a pure, sterile inactivated rabies vaccine produced on vero cells. RABIVAX-S vaccine is lyophilized and is supplied with rehydration solution (1 vial containing 1 dose of lyophilized vaccine and 1 vial of rehydration solution).

    Biological: RABIVAX-S

  • Experimental
    immunogenicityof a 3-dose regimen of RABIVAX-S in subgroup of participants

    RABIVAX-S is a pure, sterile inactivated rabies vaccine produced on vero cells. RABIVAX-S vaccine is lyophilized and is supplied with rehydration solution (1 vial containing 1 dose of lyophilized vaccine and 1 vial of rehydration solution).

    Biological: RABIVAX-S

Interventions

  • BiologicalRABIVAX-S

    1 ml dose vaccine containing ≥ 2.5 IU of purified rabies antigen (Pitman-Moore rabies virus strain 3218; acclimatized and cultured on vero cells, inactivated with β propiolactone). Pre-exposure prophylaxis regimens for two groups * Intramuscular 1ml on days D0, D7 and D21+7 * Intradermal injection 0.1 ml on days D0, D7 and D21+7 Blood samples were collected on days D0, D7 and D21 - 28

06

What researchers measure

Primary outcomes

  1. Rate of Subjects Experiencing Solicited Local and Systemic Adverse Events (AE) after

    Solicited local and systemic AEs were assessed by study staff in 30 minutes after vaccination.

    Time frame: Within 30 minutes of each vaccination

  2. Rate of Subjects Experiencing Solicited Local and Systemic Adverse Events (AE)

    Solicited local AEs were assessed by study staff 30 minutes after vaccination then daily for 7 days

    Time frame: within 7 days (day 1 to 7) of each vaccination and within 21 day after the first vaccination

  3. Rate of Subjects Experiencing Unsolicited Adverse Events (AE)

    Unsolicited AEs were observed by study staff while the subject is at a clinic for a study visit or reported by the subject at any time. Any sign or symptom that would normally be considered a "solicited AE" (for example, fever, nausea, injection site pain) starting after 7 days post-vaccination was to be recorded as an unsolicited AE

    Time frame: during 21 days after the third vaccination

  4. Rate of Subjects Experiencing Unsolicited Serious Adverse Events (SAE)

    A serious adverse event (SAE) is defined as an AE that meets one of the following conditions: Deadly. Life-threatening. Requires inpatient hospital admission or extended stay in hospital. Causes birth defects. Causes permanent or permanent injury or disability. Critical medical events that may not be fatal, not life-threatening, or require inpatient treatment will be considered a SAE if it is judged by professional judgment that the incident would be potentially dangerous. subject's health and the need for medical or surgical intervention to prevent one of the aforementioned consequences

    Time frame: Day 1 to Day 42

Secondary outcomes

  1. Rate of Subjects With Seroconversion of rabies virus neutralizing antibody (RVNA) for Vaccine Antigens for subgroup of subjects

    Serum specimens were tested for the presence and titer of rabies virus neutralizing antibody (RVNA) and the seroprotection rate was RVNA titer ≥0.5 IU/mL

    Time frame: Day 0, day 7, day 21 and day 42

  2. Geometric Mean Titer (GMT) of rabies virus neutralizing antibody (RVNA) for Vaccine Antigens at Baseline and Day 22 or 49 after vaccination (depending on age group) for each antigenic component of the vaccine

    Serum specimens during Phase 3 were tested for the presence and titer of RVNA

    Time frame: Day 0, day 7, day 21 and day 42

07

Study locations

1 site
  • CDC Thai Binh
    Thai Binh, 410000, Vietnam
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 20, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05937113
Lead sponsor
Vietnam Military Medical University
Collaborators
Vabiotech
Responsible party
Pham Ngoc Hung (Department of Epidemiology, Vietnam Military Medical University) — Principal investigator
First posted
Jul 10, 2023
Start date
Jun 13, 2020
Primary completion
Jul 2, 2020
Completion
Oct 30, 2020
Last update
Jul 20, 2023

Study contacts

Pham N Hung, As. Prof.
principal investigator · Vietnam Military Medical University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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