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Study of a Novel Tetravalent Dengue Vaccine in Healthy Children and Adolescents Aged 9 to 16 Years in Latin America

Primary Purpose

Dengue Fever, Dengue Hemorrhagic Fever, Dengue

Status
Completed
Phase
Phase 3
Locations
International
Study Type
Interventional
Intervention
Live, attenuated, dengue serotype 1, 2, 3, 4 virus
Placebo: (NaCl) 0.9% solution
Sponsored by
Sanofi Pasteur, a Sanofi Company
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for Dengue Fever focused on measuring Dengue Virus, Dengue fever, Dengue Hemorrhagic Fever, CYD dengue vaccine, Flavivirus, Dengue Disease

Eligibility Criteria

9 Years - 16 Years (Child)All SexesAccepts Healthy Volunteers

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.

Sites / Locations

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

CYD Dengue Vaccine Group

Placebo Group

Arm Description

Participants were to receive 3 doses of CYD dengue vaccine; one each at 0, 6, and 12 months.

Participants were to receive a placebo vaccine at 0, 6, and 12 months.

Outcomes

Primary Outcome Measures

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
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >=38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue reverse transcriptase polymerase chain reaction (RT-PCR) and/or dengue non-structural (NS) protein 1 antigen enzyme-linked immunosorbent assay (ELISA). Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.

Secondary Outcome Measures

Number of Symptomatic VCD Cases Due to Any Serotype During the Active Phase Following Injection With Either CYD Dengue Vaccine or a Placebo
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >=38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue RT-PCR and/or dengue NS 1 ELISA. Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.
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
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >= 38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue RT-PCR and/or dengue NS 1 ELISA. Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.
Number of Symptomatic VCD Cases Due to Any Serotype Post-dose 2 Following Injection With Either CYD Dengue Vaccine or a Placebo
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >= 38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue RT-PCR and/or dengue NS 1 ELISA. Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.
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
Dengue hemorrhagic fever (DHF) cases were defined as number of participants with at least one symptomatic VCD episode meeting the 1997 WHO criteria. (a) Fever: acute onset, high (>= 38°C) and continuous, lasting 2 to 7 days and (b) any of the pre-listed hemorrhagic manifestations and laboratory findings of thrombocytopenia (platelet <=100 x 109/L) and plasma leakage as shown by hemoconcentration (hematocrit increased by 20% or more) or pleural effusion (seen on CXR) and/or ascites and/ or hypoalbuminemia. The first two clinical criteria plus thrombocytopenia and signs of plasma leakage are enough to establish a clinical diagnosis of DHF. DHF was graded as follows: Grade I: Fever accompanied by non-specific constitutional symptoms; the only hemorrhagic manifestation is a positive tourniquet test; Grade II: Spontaneous bleeding in addition to the manifestations of Grade I participants, usually in the form of skin and/or other hemorrhage.
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
The 1997 WHO criteria are: a) Fever: acute onset, high (>= 38°C) and continuous, for 2 to 7 days and (b) any of the following: thrombocytopenia (platelet <=100 x 109/L) and plasma leakage as shown by hematocrit increased by 20% or more or pleural effusion and/or ascites and/or hypoalbuminemia. The first two clinical criteria plus thrombocytopenia and signs of plasma leakage are enough to establish diagnosis of DHF. DHF was graded as follows: Grade I: Fever accompanied by non-specific constitutional symptoms; the only hemorrhagic manifestation is a positive tourniquet test; Grade II: Spontaneous bleeding in addition to the manifestations of Grade I participant, usually in the form of skin and/or other hemorrhages; Grade III: Circulatory failure manifested by rapid and weak pulse, narrowing of pulse pressure (20 mmHg or less) or hypotension, with the presence of cold clammy skin and restlessness; and Grade IV: Profound shock with undetectable blood pressure and pulse.
Number of Hospitalized VCD Cases Throughout the Trial Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo
Hospitalized VCD cases were defined as VCD confirmed by dengue RT-PCR and/or dengue NS 1 ELISA in participants with acute febrile illness (temperature >=38°C on at least 2 consecutive days) requiring hospitalization.
Number of Hospitalized VCD Cases During the Surveillance Expansion Period Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo
Hospitalized VCD cases were defined as VCD confirmed by dengue RT-PCR and/or dengue NS 1 ELISA in participants with acute febrile illness (temperature >=38°C on at least 2 consecutive days) requiring hospitalization.
Number of Clinically Severe VCD Cases Throughout the Trial Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo
The severity of VCD cases was assessed by an Independent Data monitoring Committee (IDMC) based on a medical review of cases and any of the following criteria:1) Platelet count <=100000 /μl and bleeding (tourniquet, petechiae or any bleeding) plus plasma leakage 2) Shock (pulse pressure <= 20 mmHg in a child, or hypotension [<= 90 mmHg] with tachycardia, weak pulse and poor perfusion) 3) Bleeding requiring blood transfusion 4) Encephalopathy i.e. unconsciousness or poor conscious state or fitting not attributable to simple febrile convulsion or focal neurological signs. Poor conscious state or unconsciousness must be supported by Glasgow Coma Scale (GCS) score 5) Liver impairment (AST >1000 IU/L or prothrombin time [PT] International normalized ratio [INR] >1.5) excluding other causes of viral hepatitis 6) Impaired kidney function (serum creatinine >= 1.5 mg/dL) 7) Myocarditis, pericarditis or clinical heart failure supported by CXR, echocardiography, ECG or cardiac enzymes.
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
The severity of VCD cases was assessed by an IDMC based on a medical review of cases and any of the following criteria:-1) Platelet count <=100000 /μl and bleeding (tourniquet, petechiae or any bleeding) plus plasma leakage 2) Shock (pulse pressure <= 20 mmHg in a child, or hypotension [<= 90 mmHg] with tachycardia, weak pulse and poor perfusion) 3) Bleeding requiring blood transfusion 4) Encephalopathy i.e. Unconsciousness or poor conscious state or fitting not attributable to simple febrile convulsion or focal neurological signs. Poor conscious state or unconsciousness must be supported by GCS score 5) Liver impairment (AST >1000 IU/L or PT INR >1.5) excluding other causes of viral hepatitis 6) Impaired kidney function (serum creatinine >= 1.5 mg/dL) 7) Myocarditis, pericarditis or clinical heart failure supported by CXR, echocardiography, ECG or cardiac enzymes.
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
Dengue neutralizing antibody levels against each of the 4 dengue virus serotypes (parental strains) were measured by the plaque reduction neutralization test in a pre-defined subset of participants.
Geometric Mean Titers of Antibodies Against Each Dengue Virus Serotype Before and Following Injection With Either CYD Dengue Tetravalent Vaccine or a Placebo
Geometric mean titers for each of the 4 dengue virus serotypes (parental strains) were assessed using the plaque reduction neutralization test in a pre-defined subset of participants.
Number of Participants With Solicited Injection Site Reactions Following Any and Each Injection With Either CYD Dengue Vaccine or a Placebo
Solicited injection site reactions: Pain, Erythema, and Swelling. Grade 3 reactions (9-11 years): Pain: incapacitating, unable to perform usual activities; Erythema and Swelling, >= 50 mm. Grade 3 Solicited injection site reactions (12-16 years): Pain: significant, prevents daily activity; Erythema and Swelling, >100 mm.
Number of Participants With Solicited Systemic Reactions Following Any and Each Injection With Either CYD Dengue Vaccine or a Placebo
Solicited systemic reactions: Fever (Temperature), Headache, Malaise, Myalgia, and Asthenia. Grade 3 reactions: Fever: >= 39°C; Headache, Malaise, Myalgia, and Asthenia: significant, prevents daily activity.

Full Information

First Posted
June 14, 2011
Last Updated
March 10, 2022
Sponsor
Sanofi Pasteur, a Sanofi Company
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1. Study Identification

Unique Protocol Identification Number
NCT01374516
Brief Title
Study of a Novel Tetravalent Dengue Vaccine in Healthy Children and Adolescents Aged 9 to 16 Years in Latin America
Official Title
Efficacy and Safety of a Novel Tetravalent Dengue Vaccine in Healthy Children and Adolescents Aged 9 to 16 Years in Latin America
Study Type
Interventional

2. Study Status

Record Verification Date
March 2022
Overall Recruitment Status
Completed
Study Start Date
June 8, 2011 (Actual)
Primary Completion Date
November 2014 (Actual)
Study Completion Date
March 5, 2018 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Sanofi Pasteur, a Sanofi Company

4. Oversight

Data Monitoring Committee
Yes

5. Study Description

Brief 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.
Detailed Description
Participants were randomized to either receive 3 injections of CYD dengue vaccine or a placebo at 0, 6, and 12 months. A subset of participants from each country (N=2000) was also evaluated for reactogenicity and immunogenicity. For each participant, the Active Phase of dengue case detection began after the first injection (Dose 1) and continued until 13 months after the third injection (Dose 3). It was assumed that 12 months of surveillance should result in the detection of a sufficient number of VCD cases to allow for an assessment of efficacy. The Hospital Phase began after the Active Phase. Participants with a febrile illness and requiring hospitalization were screened for dengue until the end of the study. Participants who consented to participate in the SEP were actively followed for dengue case detection (i.e. at least weekly contact and capturing any acute febrile illness, not just hospitalized febrile cases, as in the Active Phase). The SEP was designed to maximize the detection of symptomatic VCD (hospitalized or not) in order to describe CYD dengue vaccine efficacy and safety in preventing symptomatic dengue in the long-term. Participants who declined participating in the SEP continued surveillance as in the Hospital Phase until trial completion. Symptomatic VCD cases occurring more than (>) 28 days after dose 3 (during the Active Phase) are defined as: Acute febrile illness (i.e. temperature >=38 degree Celsius (°C) on at least 2 consecutive days) Virologically confirmed by dengue Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) and/or dengue non-structural (NS)1 enzyme-linked immunosorbent assay (ELISA) Ag test. Severity was assessed using a definition consistent with the 1997 WHO Classification Dengue Hemorrhagic Fever and by an independent Data Monitoring Committee (IDMC) severity criteria.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Dengue Fever, Dengue Hemorrhagic Fever, Dengue
Keywords
Dengue Virus, Dengue fever, Dengue Hemorrhagic Fever, CYD dengue vaccine, Flavivirus, Dengue Disease

7. Study Design

Primary Purpose
Prevention
Study Phase
Phase 3
Interventional Study Model
Parallel Assignment
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
20869 (Actual)

8. Arms, Groups, and Interventions

Arm Title
CYD Dengue Vaccine Group
Arm Type
Experimental
Arm Description
Participants were to receive 3 doses of CYD dengue vaccine; one each at 0, 6, and 12 months.
Arm Title
Placebo Group
Arm Type
Placebo Comparator
Arm Description
Participants were to receive a placebo vaccine at 0, 6, and 12 months.
Intervention Type
Biological
Intervention Name(s)
Live, attenuated, dengue serotype 1, 2, 3, 4 virus
Other Intervention Name(s)
CYD Dengue Vaccine
Intervention Description
0.5 mL, Subcutaneous
Intervention Type
Biological
Intervention Name(s)
Placebo: (NaCl) 0.9% solution
Intervention Description
0.5 mL, Subcutaneous
Primary Outcome Measure Information:
Title
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
Description
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >=38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue reverse transcriptase polymerase chain reaction (RT-PCR) and/or dengue non-structural (NS) protein 1 antigen enzyme-linked immunosorbent assay (ELISA). Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.
Time Frame
28 days and up to 13 months post-injection 3
Secondary Outcome Measure Information:
Title
Number of Symptomatic VCD Cases Due to Any Serotype During the Active Phase Following Injection With Either CYD Dengue Vaccine or a Placebo
Description
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >=38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue RT-PCR and/or dengue NS 1 ELISA. Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.
Time Frame
Day 0 up to 13 months post-injection 3
Title
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
Description
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >= 38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue RT-PCR and/or dengue NS 1 ELISA. Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.
Time Frame
28 days post-injection 1 and up to 13 months post-injection 3
Title
Number of Symptomatic VCD Cases Due to Any Serotype Post-dose 2 Following Injection With Either CYD Dengue Vaccine or a Placebo
Description
Symptomatic VCD cases were defined as occurrence of acute febrile illness (temperature >= 38°C on at least 2 consecutive days) and confirmation of dengue virus infection by dengue RT-PCR and/or dengue NS 1 ELISA. Vaccine efficacy was defined as 1 minus the ratio of density incidence due to any serotype after at least 1 dose in the CYD Dengue Vaccine Group over the density incidence of the Placebo Group.
Time Frame
28 days post-injection 2 and up to 13 months post-injection 3
Title
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
Description
Dengue hemorrhagic fever (DHF) cases were defined as number of participants with at least one symptomatic VCD episode meeting the 1997 WHO criteria. (a) Fever: acute onset, high (>= 38°C) and continuous, lasting 2 to 7 days and (b) any of the pre-listed hemorrhagic manifestations and laboratory findings of thrombocytopenia (platelet <=100 x 109/L) and plasma leakage as shown by hemoconcentration (hematocrit increased by 20% or more) or pleural effusion (seen on CXR) and/or ascites and/ or hypoalbuminemia. The first two clinical criteria plus thrombocytopenia and signs of plasma leakage are enough to establish a clinical diagnosis of DHF. DHF was graded as follows: Grade I: Fever accompanied by non-specific constitutional symptoms; the only hemorrhagic manifestation is a positive tourniquet test; Grade II: Spontaneous bleeding in addition to the manifestations of Grade I participants, usually in the form of skin and/or other hemorrhage.
Time Frame
Day 0 to the end of study (up to 72 months)
Title
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
Description
The 1997 WHO criteria are: a) Fever: acute onset, high (>= 38°C) and continuous, for 2 to 7 days and (b) any of the following: thrombocytopenia (platelet <=100 x 109/L) and plasma leakage as shown by hematocrit increased by 20% or more or pleural effusion and/or ascites and/or hypoalbuminemia. The first two clinical criteria plus thrombocytopenia and signs of plasma leakage are enough to establish diagnosis of DHF. DHF was graded as follows: Grade I: Fever accompanied by non-specific constitutional symptoms; the only hemorrhagic manifestation is a positive tourniquet test; Grade II: Spontaneous bleeding in addition to the manifestations of Grade I participant, usually in the form of skin and/or other hemorrhages; Grade III: Circulatory failure manifested by rapid and weak pulse, narrowing of pulse pressure (20 mmHg or less) or hypotension, with the presence of cold clammy skin and restlessness; and Grade IV: Profound shock with undetectable blood pressure and pulse.
Time Frame
From consent to participate in the Surveillance Expansion Period to the end of study (up to 72 months)
Title
Number of Hospitalized VCD Cases Throughout the Trial Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo
Description
Hospitalized VCD cases were defined as VCD confirmed by dengue RT-PCR and/or dengue NS 1 ELISA in participants with acute febrile illness (temperature >=38°C on at least 2 consecutive days) requiring hospitalization.
Time Frame
Day 0 up to the end of study (up to 72 months)
Title
Number of Hospitalized VCD Cases During the Surveillance Expansion Period Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo
Description
Hospitalized VCD cases were defined as VCD confirmed by dengue RT-PCR and/or dengue NS 1 ELISA in participants with acute febrile illness (temperature >=38°C on at least 2 consecutive days) requiring hospitalization.
Time Frame
From consent to participate in the Surveillance Expansion Period to end of the study (up to 72 months)
Title
Number of Clinically Severe VCD Cases Throughout the Trial Due to Any Serotype Following Injection With Either CYD Dengue Vaccine or a Placebo
Description
The severity of VCD cases was assessed by an Independent Data monitoring Committee (IDMC) based on a medical review of cases and any of the following criteria:1) Platelet count <=100000 /μl and bleeding (tourniquet, petechiae or any bleeding) plus plasma leakage 2) Shock (pulse pressure <= 20 mmHg in a child, or hypotension [<= 90 mmHg] with tachycardia, weak pulse and poor perfusion) 3) Bleeding requiring blood transfusion 4) Encephalopathy i.e. unconsciousness or poor conscious state or fitting not attributable to simple febrile convulsion or focal neurological signs. Poor conscious state or unconsciousness must be supported by Glasgow Coma Scale (GCS) score 5) Liver impairment (AST >1000 IU/L or prothrombin time [PT] International normalized ratio [INR] >1.5) excluding other causes of viral hepatitis 6) Impaired kidney function (serum creatinine >= 1.5 mg/dL) 7) Myocarditis, pericarditis or clinical heart failure supported by CXR, echocardiography, ECG or cardiac enzymes.
Time Frame
Day 0 to the end of study (up to 72 months)
Title
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
Description
The severity of VCD cases was assessed by an IDMC based on a medical review of cases and any of the following criteria:-1) Platelet count <=100000 /μl and bleeding (tourniquet, petechiae or any bleeding) plus plasma leakage 2) Shock (pulse pressure <= 20 mmHg in a child, or hypotension [<= 90 mmHg] with tachycardia, weak pulse and poor perfusion) 3) Bleeding requiring blood transfusion 4) Encephalopathy i.e. Unconsciousness or poor conscious state or fitting not attributable to simple febrile convulsion or focal neurological signs. Poor conscious state or unconsciousness must be supported by GCS score 5) Liver impairment (AST >1000 IU/L or PT INR >1.5) excluding other causes of viral hepatitis 6) Impaired kidney function (serum creatinine >= 1.5 mg/dL) 7) Myocarditis, pericarditis or clinical heart failure supported by CXR, echocardiography, ECG or cardiac enzymes.
Time Frame
From consent to participate in the Surveillance Expansion Period to the end of study (up to 72 months)
Title
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
Description
Dengue neutralizing antibody levels against each of the 4 dengue virus serotypes (parental strains) were measured by the plaque reduction neutralization test in a pre-defined subset of participants.
Time Frame
Pre-injection 1, 28 days post Injections 2 and 3, 13 months (Visit [V] 07) and 60 months (Visit [V] 12) post-injection 3
Title
Geometric Mean Titers of Antibodies Against Each Dengue Virus Serotype Before and Following Injection With Either CYD Dengue Tetravalent Vaccine or a Placebo
Description
Geometric mean titers for each of the 4 dengue virus serotypes (parental strains) were assessed using the plaque reduction neutralization test in a pre-defined subset of participants.
Time Frame
Pre-injection 1, 28 days post Injections 2 and 3, 13 months (V 07) and 60 months (V 12) post-injection 3
Title
Number of Participants With Solicited Injection Site Reactions Following Any and Each Injection With Either CYD Dengue Vaccine or a Placebo
Description
Solicited injection site reactions: Pain, Erythema, and Swelling. Grade 3 reactions (9-11 years): Pain: incapacitating, unable to perform usual activities; Erythema and Swelling, >= 50 mm. Grade 3 Solicited injection site reactions (12-16 years): Pain: significant, prevents daily activity; Erythema and Swelling, >100 mm.
Time Frame
Within 7 days after each and any injection
Title
Number of Participants With Solicited Systemic Reactions Following Any and Each Injection With Either CYD Dengue Vaccine or a Placebo
Description
Solicited systemic reactions: Fever (Temperature), Headache, Malaise, Myalgia, and Asthenia. Grade 3 reactions: Fever: >= 39°C; Headache, Malaise, Myalgia, and Asthenia: significant, prevents daily activity.
Time Frame
Within 14 days after each and any injection

10. Eligibility

Sex
All
Minimum Age & Unit of Time
9 Years
Maximum Age & Unit of Time
16 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
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.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Medical Director
Organizational Affiliation
Sanofi Pasteur Inc.
Official's Role
Study Director
Facility Information:
City
Fortaleza
State/Province
CE
ZIP/Postal Code
60430 270
Country
Brazil
City
Vitória
State/Province
ES
ZIP/Postal Code
29040 09
Country
Brazil
City
Goiania
State/Province
GO
ZIP/Postal Code
74675 020
Country
Brazil
City
Campo Grande
State/Province
MS
ZIP/Postal Code
79074 460
Country
Brazil
City
Natal
State/Province
RN
ZIP/Postal Code
59025 600
Country
Brazil
City
Aguazul
State/Province
Casanare
Country
Colombia
City
Yopal
State/Province
Casanare
Country
Colombia
City
Girardot
State/Province
Cundinamarca
Country
Colombia
City
Acacias
State/Province
Meta
Country
Colombia
City
Armenia
State/Province
Quindío
Country
Colombia
City
Calarcá
State/Province
Quindío
Country
Colombia
City
La Tebaida
State/Province
Quindío
Country
Colombia
City
Montenegro
State/Province
Quindío
Country
Colombia
City
Bucaramanga
State/Province
Santander
Country
Colombia
City
Tegucigalpa
State/Province
Municipalidad Del Distrito Central
Country
Honduras
City
Temixco
State/Province
Morelos
Country
Mexico
City
Municipio De Cd. Mante
State/Province
Tamaulipas
Country
Mexico
City
Veracruz Puerto
State/Province
Veracruz
Country
Mexico
City
Tizimin
State/Province
Yucatán
Country
Mexico
City
Valladolid
State/Province
Yucatán
Country
Mexico
City
Guayama
ZIP/Postal Code
00784
Country
Puerto Rico
City
San Juan
ZIP/Postal Code
00918
Country
Puerto Rico

12. IPD Sharing Statement

Plan to Share IPD
Yes
IPD Sharing Plan Description
Qualified researchers may request access to patient level data and related study documents including the clinical study report, study protocol with any amendments, blank case report form, statistical analysis plan, and dataset specifications. Patient level data will be anonymized and study documents will be redacted to protect the privacy of trial participants. Further details on Sanofi's data sharing criteria, eligible studies, and process for requesting access can be found at: https://vivli.org
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Links:
URL
http://www.sanofipasteur.com
Description
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Study of a Novel Tetravalent Dengue Vaccine in Healthy Children and Adolescents Aged 9 to 16 Years in Latin America

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