- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03587389
Response to Rotavirus Vaccine in Infants in Ho Chi Minh City in Vietnam
An Open Single-arm Interventional Study to Identify the Influence of Human Genetic Variation on Early Transcriptional Responses and Protective Immunity Following Immunization With Rotarix Rotavirus Vaccine in Infants in HCM City in Vietnam
The primary objective is to measure the effect of host human genetics on the resulting immunological responses and long-term protection following rotavirus immunization of a study population of infants in Ho Chi Minh City, Vietnam.
The secondary objectives are to assess the temporal immunological responses following rotavirus vaccination, and to investigate the role of maternally derived antibodies, and other factors that could potentially affect immunological responses following rotavirus vaccination. Also to assess infecting rotavirus genotypes in the vaccine failure cases.
Study Overview
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
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Ho Chi Minh, Vietnam, 700000
- Hung Vuong Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Infants (both males and females) between 8 and 9 weeks (i.e. approximately 2 months) of age who are attending Hung Vuong Hospital to receive their standard EPI vaccinations.
- Currently registered residents of Districts 5 (where Hung Vuong Hospital is located) or 1, 6, 8, 10, or 11 (districts that are neighbouring district 5) in Ho Chi Minh city, with no specific intention of relocating in the next 12 months.
- Informed consent to be enrolled in the study and comply with study procedures, including host genetic studies.
Exclusion Criteria:
- Refusal of consent.
- Parent/ guardian under the age of 18.
- Premature (i.e. gestation period <37 weeks).
- Infants who have already been immunized with either a rotavirus vaccine or the standard 2-month EPI vaccinations.
- History of hypersensitivity to any components of the vaccine or adverse vaccine event.
- History of intussusception or congenital malformation of the gastrointestinal tract in the child that is likely to predispose child to intussusception.
- History of severe combined immunodeficiency disease (SCID), acquired immune deficiency syndrome (AIDS) or Human immunodeficiency virus (HIV) positivity, or other known immunodeficiency syndromes that may place the child at risk during immunisation.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: PREVENTION
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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EXPERIMENTAL: Rotavirus vaccine
The Rotarix vaccine package consist of 1.5 ml of oral suspension in a pre-filled oral applicator (type I glass) with a plunger stopper (rubber butyl) and a protective tip cap (rubber butyl) in pack sizes of 1. The vaccination course consists of two doses. The first dose may be administered from the age of 6 weeks. There should be an interval of at least 4 weeks between doses. The vaccination course should preferably be given before 16 weeks of age, but must be completed by the age of 24 weeks. Rotarix is for oral use only and should under no circumstancies be injected. All participating infants will receive two doses of Rotarix vaccine following the standard Rotarix immunization protocol. |
In this study, the 1st dose of Rotarix vaccine will be administered when infants are at ages between weeks 8-9 and the 2nd dose is 28-37 days after the 1st dose, which means that there is an interval of 28-37 days or 4-5 weeks between doses.
A reminding call will be set at about 4 weeks after the 1st dose to remind parents to bring their children back to Hung Vuong Hospital for the 2nd dose of Rotarix to ensure the completion of the 2nd dose of Rotarix vaccine.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The rotavirus vaccine failure events during the time period from recruitment to 18 months of age.
Time Frame: from the recruitment to 18 months of age after the first dose of vaccination
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The primary endpoint is to measure the proportion of rotavirus vaccine failure events during the time period from recruitment to 18 months of age after the first dose of vaccination.
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from the recruitment to 18 months of age after the first dose of vaccination
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Quantification of the antibody response following immunization
Time Frame: data collected during 7 site visits (Visit 1: Rotarix Dose 1, Visit 2: 2-3 after Visit 1, Visit 3: 28-37 days after Visit 1, Visit 4: 2-3 days after Visit 3, Visit 5: 6 months old, Visit 6: 12 months old, Visit 7: 18 months old)
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The temporal kinetics of rotavirus-specific antibody responses following immunization will be measured using virus-binding enzyme-linked immunosorbent assay (ELISA), which will be used to investigate the effect of host genetics, maternally transferred antibodies, and geospatial and epidemiological factors on the humoral response following vaccination.
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data collected during 7 site visits (Visit 1: Rotarix Dose 1, Visit 2: 2-3 after Visit 1, Visit 3: 28-37 days after Visit 1, Visit 4: 2-3 days after Visit 3, Visit 5: 6 months old, Visit 6: 12 months old, Visit 7: 18 months old)
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Assessment of infecting rotavirus genotypes in vaccine failure cases
Time Frame: from the recruitment to 18 months of age after the first dose of vaccination
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The rotavirus genotypes in vaccine failure cases will be assessed to investigate whether vaccine failure cases are a result of varying rotavirus genotypes.
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from the recruitment to 18 months of age after the first dose of vaccination
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Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Stephen Baker, Professor, Oxford University Clinical Research Unit
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 21EN
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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