Immunogenicity Study of Antibody Persistence and Booster Effect of DTaP-HB PRP~T Combined Vaccine in Filipino Infants
Status and phase
Conditions
Treatments
Details and patient eligibility
About
DTaP-HB-PRP~T combined vaccine is being developed in order to comply with expanding programs for immunization in infancy, while offering the benefit of a reduced number of injections, and potentially of an increased acceptance.
Primary Objectives:
- To describe the antibody persistence at 12 to 18 months following a three-dose primary series vaccination of either DTaP-HB-PRP~T or Tritanrix-Hep B/Hib™ given at 6, 10 and 14 weeks of age, and one dose of Hepatitis B (Hep B) vaccine given at birth.
- To describe the effect of a booster dose of DTaP-HB-PRP~T on immunogenicity at 12 to 18 months following a three-dose primary series vaccination of either DTaP-HB-PRP~T or Tritanrix HepB/Hib™ given at 6, 10 and 14 weeks of age, and one dose of Hep B vaccine given at birth.
Secondary Objective:
- To describe the safety profile of the booster dose of the DTaP-HB-PRP~T vaccine when administered concomitantly with Oral Polio Vaccine (OPV).
Full description
This study will assess the immunogenicity and reactogenicity of the investigational DTaP-HB-PRP~T combined vaccine when given as a booster dose, concomitantly with OPV, in Filipino children previously primed at 6, 10, and 14 weeks with the investigational DTaP-HB-PRP~T combined vaccine or Tritanrix-Hep B/Hib™ vaccine and having received a first dose of Hep B vaccine (Recomvax B™) at birth in a previous study, AL201 (NCT00348881).
Enrollment
Sex
Ages
Volunteers
Inclusion criteria
- Toddler aged 12 to 18 months of age on the day of inclusion (range: 365 days to 578 days of age inclusive)
- Participated in the AL201 study and completed the three-dose primary series with either DTaP-HB-PRP~T or Tritanrix-HepB/Hib™, and OPV, at 6, 10 and 14 weeks of age, and received hepatitis B vaccine at birth
- Informed consent form signed by one parent or legal representative if appropriate (independent witness mandatory if parent is illiterate)
- Able to attend all scheduled visits and to comply with all trial procedures
Exclusion criteria
- Participation in another clinical trial in the 4 weeks preceding the trial vaccination
- Planned participation in another clinical trial during the present trial period
- Congenital or acquired immunodeficiency, immunosuppressive therapy such as long-term (for more than 2 weeks) systemic corticosteroid therapy within the preceding 3 months
- Known systemic hypersensitivity to any of the vaccine components or history of a life-threatening reaction to a vaccine containing the same substances
- Chronic illness at a stage that could interfere with trial conduct or completion
- Blood or blood-derived products received in the last 3 months
- Any vaccination in the 4 weeks preceding the trial vaccination
- Vaccination planned in the 4 weeks following the trial vaccination
- Febrile (temperature ≥ 38.0°C) or acute illness on the day of inclusion
- History of documented diphtheria, tetanus, pertussis, Haemophilus influenzae type b, hepatitis B or poliomyelitis infection(s) (confirmed either clinically, serologically, or microbiologically)
- Vaccination with a vaccine containing diphtheria, tetanus, pertussis, Haemophilus influenzae type b, hepatitis B or poliovirus 3 types antigen, since the end of the primary series
- Thrombocytopenia or a bleeding disorder contraindicating IM vaccination
- Serious adverse event related to any vaccination in the AL201 study.
Trial design
Primary purpose
Allocation
Interventional model
Masking
1,843 participants in 2 patient groups
Trial contacts and locations
Loading...
Data sourced from clinicaltrials.gov
Clinical trials
Research sites
Resources
Legal