Phase 3
Completed N=20,869
Study of a Novel Tetravalent Dengue Vaccine in Healthy Children and Adolescents Aged 9 to 16 Years in Latin America
Dengue Fever · Dengue Hemorrhagic Fever · Dengue
Source: ClinicalTrials.gov NCT01374516 ↗
Enrolled (actual)
20,869
Serious AEs
12.8%
Results posted
Mar 2019
Primary outcomePrimary: Number of Symptomatic Virologically Confirmed Dengue (VCD) Cases Due to Any Serotype During the Active Phase Post-dose 3 Following Injection With Either CYD Dengue Vaccine or a Placebo — 176; 221 Cases
◆ Published Evidence
Highly cited
1,075citations · ~98 / year
Efficacy and Long-Term Safety of a Dengue Vaccine in Regions of Endemic Disease.
Summary
The aim of the study was to assess the efficacy of Sanofi Pasteur's CYD dengue vaccine in preventing symptomatic virologically-confirmed dengue cases for dengue-endemic areas of Latin America.
Primary Objective:
To assess the efficacy of CYD dengue vaccine after 3 vaccinations at 0, 6, and 12 months in preventing symptomatic virologically-confirmed dengue (VCD) cases, regardless of the severity, due to any of the four serotypes in children and adolescents aged 9 to 16 years at the time of inclusion.
Secondary Objectives:
* To describe the efficacy of CYD dengue vaccine in preventing symptomatic VCD cases after the third dose to the end of the Active Phase, after at least 1 dose, and after 2 doses.
* To describe the occurrence of hospitalized VCD cases and the occurrence of severe (clinically severe or as per World Health Organization (WHO) criteria) VCD cases, throughout the Surveillance Expansion Period (SEP) and throughout the trial (from Day 0 until the end of the study).
* To describe the antibody response to each dengue serotype after Dose 2, after Dose 3, and 1 and 5 years after Dose 3.
* To describe the occurrence of serious adverse events (SAEs), including SAEs of special interest in all participants throughout the trial period.
Linked Publications (5)
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Efficacy and Long-Term Safety of a Dengue Vaccine in Regions of Endemic Disease.
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Efficacy of a tetravalent dengue vaccine in children in Latin America.
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Effect of Dengue Serostatus on Dengue Vaccine Safety and Efficacy.
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Symptomatic Dengue in Children in 10 Asian and Latin American Countries.
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Four-year safety follow-up of the tetravalent dengue vaccine efficacy randomized controlled trials in Asia and Latin America.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Number of Symptomatic Virologically Confirmed Dengue (VCD) Cases Due to Any Serotype During the Active Phase Post-dose 3 Following Injection With Either CYD Dengue Vaccine or a Placebo |
176; 221 | — |
| SECONDARY Number of Symptomatic VCD Cases Due to Any Serotype During the Active Phase Following Injection With Either CYD Dengue Vaccine or a Placebo |
277; 385 | — |
| SECONDARY Number of Symptomatic VCD Cases Due to Any Serotype Occurring 28 Days Post-dose 1 Following Injection With Either CYD Dengue Vaccine or a Placebo |
273; 380 | — |
| SECONDARY Number of Symptomatic VCD Cases Due to Any Serotype Post-dose 2 Following Injection With Either CYD Dengue Vaccine or a Placebo |
236; 306 | — |
| SECONDARY Number of Symptomatic VCD Cases Meeting World Health Organization (WHO) Criteria Throughout the Trial Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo |
7; 15; 0; 2; 7; 13 | — |
| SECONDARY Number of Symptomatic VCD Cases Meeting WHO Criteria During the Surveillance Expansion Period Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo |
2; 0; 0; 0; 2; 0 | — |
| SECONDARY Number of Hospitalized VCD Cases Throughout the Trial Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo |
46; 71 | — |
| SECONDARY Number of Hospitalized VCD Cases During the Surveillance Expansion Period Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo |
5; 2 | — |
| SECONDARY Number of Clinically Severe VCD Cases Throughout the Trial Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo |
9; 16 | — |
| SECONDARY Number of Clinically Severe VCD Cases During the Surveillance Expansion Period Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo |
42; 34 | — |
| SECONDARY Percentage of Participants With Antibody Titers >=10 1/Dil Against Each Dengue Virus Serotype Before and Following Injection (Inj.) With CYD Dengue Vaccine or Placebo |
72.8; 70.5; 92.7; 71.8; 94.9; 74.2 | — |
| SECONDARY Geometric Mean Titers of Antibodies Against Each Dengue Virus Serotype Before and Following Injection With Either CYD Dengue Tetravalent Vaccine or a Placebo |
128; 119; 458; 128; 395; 121 | — |
| SECONDARY Number of Participants With Solicited Injection Site Reactions Following Any and Each Injection With Either CYD Dengue Vaccine or a Placebo |
650; 270; 83; 44; 77; 27 | — |
| SECONDARY Number of Participants With Solicited Systemic Reactions Following Any and Each Injection With Either CYD Dengue Vaccine or a Placebo |
220; 123; 727; 379; 536; 261 | — |
Eligibility Criteria
Inclusion Criteria
- Aged 9 to 16 years on the day of inclusion and resident of the site zone
- Participant in good health, based on medical history and physical examination
- Assent form or informed consent form has been signed and dated by the participant (based on local regulations), and informed consent form has been signed and dated by the parent(s) or another legally acceptable representative (and by an independent witness if required by local regulations)
- Participant was able to attend all scheduled visits and comply with all trial procedures.
Exclusion Criteria
- Participant was pregnant, or lactating, or of childbearing potential (to be considered of non-childbearing potential, a female must be pre-menarche for at least 1 year, surgically sterile, or using an effective method of contraception or abstinence from at least 4 weeks prior to the first vaccination until at least 4 weeks after the last vaccination).
- Participation in another clinical trial investigating a vaccine, drug, medical device, or a medical procedure in the 4 weeks preceding the first trial vaccination
- Planned participation in another clinical trial during the present trial period
- Self-reported or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within the preceding 6 months; or long-term systemic corticosteroids therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months)
- Self-reported seropositivity for Human Immunodeficiency Virus (HIV) infection
- Self-reported systemic hypersensitivity to any of the vaccine components, or history of a life-threatening reaction to the vaccine used in the trial or to a vaccine containing any of the same substances
- Chronic illness that, in the opinion of the Investigator, is at a stage where it might interfere with trial conduct or completion
- Receipt of blood or blood-derived products in the past 3 months, which might interfere with assessment of the immune response
- Planned receipt of any vaccine in the 4 weeks following any trial vaccination
- Deprived of freedom by administrative or court order, or in an emergency setting, or hospitalized involuntarily
- Current alcohol abuse or drug addiction that may interfere with the participant's ability to comply with trial procedures
- Identified as a site employee of the Investigator or study center, with direct involvement in the proposed study or other studies under the direction of that Investigator or study center, as well as a family member (i.e., immediate, husband, wife and their children, adopted or natural) of the site employees or the Investigator.
Data sourced from ClinicalTrials.gov (NCT01374516) and the linked publication. Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.