Dengue
Conditions
Keywords
Drug Therapy
Brief summary
The purpose of this study was to describe the neutralizing antibody response against each dengue serotype at 1 month post second dose of TDV or placebo in dengue-naive adolescent participants.
Detailed description
The vaccine tested in this study was tetravalent dengue vaccine (TDV). TDV was tested to assess the safety and immunogenicity in healthy adolescents in non-endemic area(s) for dengue. The study enrolled 400 healthy participants. Participants were randomized in 3:1 ratio to receive: * TDV 0.5 mL subcutaneous injection * Placebo normal saline solution (0.9% NaCl) for injection. In each trial group, participants received 2-dose schedule of TDV or placebo by subcutaneous injection on Days 1 (Month 0) and 90 (Month 3), but not all participants received both doses (8 subjects discontinued the trial before receiving the second dose). This multi-center trial was conducted in Mexico. The overall time to participate in this study was 270 days. Participants had multiple visits to the clinic including a final visit at Day 270.
Interventions
BIOLOGICALTetravalent Dengue Vaccine (TDV)
TDV subcutaneous injection
BIOLOGICALPlacebo
Normal Saline (0.9% NaCl) subcutaneous injection
Sponsors
Takeda
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
12 Years to 17 Years
Healthy volunteers
Yes
Inclusion criteria
1. The participant is aged 12 to 17 years, inclusive; 2. Is in good health at the time of entry into the trial as determined by medical history, physical examination (including vital signs) and the clinical judgment of the Investigator. 3. The participant/the participant's legally authorized representative (LAR) signs and dates a written, informed consent/assent form and any required privacy authorization prior to the initiation of any trial procedures, after the nature of the trial has been explained according to local regulatory requirements. 4. Individuals who can comply with trial procedures and are available for the duration of follow-up.
Exclusion criteria
1. Has an elevated oral temperature (≥38°C or 100.4°F) within 3 days of the intended date of vaccination. 2. Known hypersensitivity or allergy to any of the vaccine components. 3. Behavioral or cognitive impairment or psychiatric disease that, in the opinion of the Investigator, may interfere with the participant's ability to participate in the trial. 4. Has any history of progressive or severe neurologic disorder, seizure disorder or neuro-inflammatory disease (e.g., Guillain-Barre syndrome). 5. History or any illness that, in the opinion of the Investigator, might interfere with the results of the trial or pose additional risk to the participant due to participation in the trial. 6. Has known or suspected impairment/alteration of immune function, including: 1. Chronic use of oral steroids (equivalent to 20 mg/day prednisone ≥12 weeks/≥2 mg/kg body weight/day prednisone ≥2 weeks) within 60 days prior to Day 1 (M0) (use of inhaled, intranasal, or topical corticosteroids is allowed). 2. Receipt of parenteral steroids (equivalent to 20 mg/day prednisone ≥12 weeks/≥ 2 mg/kg body weight/day prednisone ≥2 weeks) within 60 days prior to Day 1 (M0). 3. Administration of immunoglobulins and/or any blood products within the 3 months prior to Day 1 (M0) or planned administration during the trial. 4. Receipt of immune-stimulants within 60 days prior to Day 1 (M0). 5. Immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within 6 months prior to Day 1 (M0). 6. Human immunodeficiency virus (HIV) infection or HIV-related disease. 7. Genetic immunodeficiency. 7. Has abnormalities of splenic or thymic function. 8. Has a known bleeding diathesis, or any condition that may be associated with a prolonged bleeding. 9. Has any serious chronic or progressive disease according to judgment of the Investigator (e.g., neoplasm, insulin dependent diabetes, cardiac, renal or hepatic disease). 10. Has body mass index (BMI) greater than or equal to 35 kg/m\^2 (= weight in kg/\[height in square meters\]). 11. Individuals participating in any clinical trial with another investigational product 30 days prior to Day 1 (M0) or intent to participate in another clinical trial at any time during the conduct of this trial. 12. Has received any other vaccine within 14 days (for inactivated vaccines) or 28 days (for live vaccines) prior to enrollment in this trial or who are planning to receive any vaccine within 28 days of trial vaccine administration. 13. Individuals involved in the trial conduct or their first degree relatives. 14. Has history of substance or alcohol abuse within the past 2 years. 15. Female participants who are pregnant or breastfeeding. 16. Females of childbearing potential who are sexually active, and who have not used any of the acceptable contraceptive methods for at least 2 months prior to Day 1 (M0). 17. Females of childbearing potential who are sexually active, and who refuse to use an acceptable contraceptive method up to 6 weeks after the last dose of trial vaccine. In addition, they must be advised not to donate ova during this period. 18. Any positive or indeterminate pregnancy test. 19. Previous and planned vaccination (during the trial conduct), against any flaviviruses including dengue, yellow fever (YF), Japanese encephalitis (JE) viruses or tick-borne encephalitis. 20. Previous participation in any clinical trial of a dengue or other flavivirus (eg, West Nile \[WN\] virus) candidate vaccine, except for participants who received placebo in those trials. 21. Participants with documented or suspected disease caused by a flavivirus such as dengue, Zika, YF, JE, WN fever, tick-borne encephalitis or Murray Valley encephalitis.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | One month post second dose (Day 120) | GMTs of neutralizing antibodies were measured by microneutralization test 50% \[MNT50\] for each of the 4 Dengue Serotypes. The 4 dengue virus serotypes were DENV-1, DENV-2, DENV-3 and DENV-4. Seropositivity is defined as reciprocal neutralizing titer ≥10. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Seropositivity Rates for Each of the 4 Dengue Serotypes | One month and six months post second dose (Day 120 and Day 270) | Seropositivity rate, defined as the percentage of participants seropositive, was derived from the titers of dengue-neutralizing antibodies. Seropositivity defined as a reciprocal neutralizing titer ≥10. The 4 dengue virus serotypes were DENV-1, DENV-2, DENV-3 and DENV-4. |
| Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | One month and six months post second dose (Day 120 and Day 270) | Seropositivity rate, defined as the percentage of participants seropositive, was derived from the titers of dengue-neutralizing antibodies. Seropositivity was defined as a reciprocal neutralizing titer ≥10. |
| Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | Within 7 days after each vaccination | Solicited local AEs (at injection site) were collected by participants using diary cards within 7 days after vaccination and included pain (none, mild: no interference with daily activity, moderate: interference with daily activity with or without treatment and severe: prevents daily activity with or without treatment), redness (erythema) (\<2.5 cm, mild: 2.5-5 cm, moderate: \>5 to \<=10 cm, severe: \>10 cm) and swelling (edema/induration) (\<2.5 cm, mild: 2.5-5 cm, moderate: \>5 to \<=10 cm, severe: \>10 cm). |
| Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | Six months post second dose (Day 270) | GMTs of neutralizing antibodies were measured by microneutralization test 50% \[MNT50\] for each of the 4 Dengue Serotypes. The 4 dengue virus serotypes were DENV-1, DENV-2, DENV-3 and DENV-4. Seropositivity is defined as reciprocal neutralizing titer ≥10. |
| Percentage of Participants With Any Unsolicited Adverse Events (AEs) Following Each Vaccination | Within 28 days after each vaccination | An AE is defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment. |
| Percentage of Participants With Medically Attended AEs (MAAEs) Throughout the Study | From first vaccination (Day 1) through end of study (Day 270) | MAAEs were defined as AEs leading to a medical visit to or by a healthcare professional including visits to an emergency department, but not fulfilling seriousness criteria. |
| Percentage of Participants With Serious Adverse Events (SAEs) Throughout the Study | From first vaccination (Day 1) through end of study (Day 270) | An SAE was defined as any untoward medical occurrence or effect that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or is medically important due to other reasons than the above mentioned criteria. |
| Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | Within 14 days after each vaccination | Solicited systemic AEs were collected by participants using diary cards within 14 days after vaccination and included fever, headache, tiredness or weakness (asthenia), feeling of discomfort (malaise) and muscle pain (myalgia). Severity scales for headache were none, mild: no interference with daily activity, moderate: interference with daily activity with or without treatment and severe: prevents normal activity with or without treatment. Severity scales for others were none, mild: no interference with daily activity, moderate: interference with daily activity and severe: prevents daily activity. A systemic AE of fever (defined as ≥38°C or ≥100.4°F) was derived from a daily temperature reading recorded within 14 days after vaccination. Fever was excluded from the overall count as no severity grading was applied for it. |
Countries
Mexico
Participant flow
Recruitment details
Participants took part in the study at 5 investigative sites in Mexico from 14-Dec-2017 to 26-Jan-2019.
Pre-assignment details
Healthy volunteers were enrolled in a 3:1 ratio into 2 parallel study groups: 1 study group received 2 doses of Tetravalent Dengue vaccine (TDV) and another group received 2 doses of TDV matching placebo subcutaneously (SC).
Participants by arm
| Arm | Count |
|---|---|
| Placebo TDV placebo-matching 0.5 mL injection, subcutaneously, once on Day 0 (first dose) and Day 90 (second dose). | 100 |
| Tetravalent Dengue Vaccine (TDV) TDV 0.5 mL, injection, subcutaneously, once on Day 0 (first dose) and Day 90 (second dose). | 300 |
| Total | 400 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 |
|---|---|---|---|
| Overall Study | Lost to Follow-up | 1 | 0 |
| Overall Study | Reason not Specified | 1 | 1 |
| Overall Study | Withdrawal by Subject | 3 | 3 |
Baseline characteristics
| Characteristic | Placebo | Tetravalent Dengue Vaccine (TDV) | Total |
|---|---|---|---|
| Age, Continuous | 14.3 years STANDARD_DEVIATION 1.57 | 14.3 years STANDARD_DEVIATION 1.69 | 14.3 years STANDARD_DEVIATION 1.66 |
| Body Mass Index (BMI) | 22.42 kg/m^2 STANDARD_DEVIATION 4.237 | 22.39 kg/m^2 STANDARD_DEVIATION 4.266 | 22.40 kg/m^2 STANDARD_DEVIATION 4.254 |
| Height | 159.6 cm STANDARD_DEVIATION 8.94 | 159.0 cm STANDARD_DEVIATION 8.68 | 159.2 cm STANDARD_DEVIATION 8.74 |
| Race/Ethnicity, Customized American Indian or Alaska Native | 55 Participants | 148 Participants | 203 Participants |
| Race/Ethnicity, Customized Hispanic or Latino | 100 Participants | 300 Participants | 400 Participants |
| Race/Ethnicity, Customized Multiracial | 45 Participants | 152 Participants | 197 Participants |
| Region of Enrollment Mexico | 100 Participants | 300 Participants | 400 Participants |
| Sex: Female, Male Female | 51 Participants | 176 Participants | 227 Participants |
| Sex: Female, Male Male | 49 Participants | 124 Participants | 173 Participants |
| Weight | 57.60 kg STANDARD_DEVIATION 14.045 | 56.84 kg STANDARD_DEVIATION 12.708 | 57.03 kg STANDARD_DEVIATION 13.041 |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 0 / 100 | 0 / 300 |
| other Total, other adverse events | 38 / 100 | 112 / 300 |
| serious Total, serious adverse events | 2 / 100 | 1 / 300 |
Outcome results
Primary
Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120
GMTs of neutralizing antibodies were measured by microneutralization test 50% \[MNT50\] for each of the 4 Dengue Serotypes. The 4 dengue virus serotypes were DENV-1, DENV-2, DENV-3 and DENV-4. Seropositivity is defined as reciprocal neutralizing titer ≥10.
Time frame: One month post second dose (Day 120)
Population: Per Protocol Set (PPS): all participants seronegative to all serotypes of dengue virus at baseline who received at least 1 dose of trial vaccine, who had a valid pre-dose (baseline) and at least 1 valid post-dose measurement for immunogenicity and no major protocol violations. Number analyzed: participants with data available at given time-point.
| Arm | Measure | Group | Value (GEOMETRIC_MEAN) |
|---|---|---|---|
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-1 | 5.3 titer |
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-2 | 6.0 titer |
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-3 | 5.2 titer |
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-4 | 5.1 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-4 | 142.7 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-1 | 327.9 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-3 | 119.5 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 120 | DENV-2 | 1742.5 titer |
Secondary
Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270
GMTs of neutralizing antibodies were measured by microneutralization test 50% \[MNT50\] for each of the 4 Dengue Serotypes. The 4 dengue virus serotypes were DENV-1, DENV-2, DENV-3 and DENV-4. Seropositivity is defined as reciprocal neutralizing titer ≥10.
Time frame: Six months post second dose (Day 270)
Population: PPS: all participants seronegative to all serotypes of dengue virus at baseline who received at least 1 dose of trial vaccine, who had a valid pre-dose (baseline) and at least 1 valid post-dose measurement for immunogenicity and no major protocol violations. Number analyzed: participants with data available at given time-point.
| Arm | Measure | Group | Value (GEOMETRIC_MEAN) |
|---|---|---|---|
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-1 | 5.4 titer |
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-2 | 5.2 titer |
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-3 | 5.3 titer |
| Placebo | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-4 | 5.0 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-4 | 37.5 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-1 | 134.7 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-3 | 45.8 titer |
| Tetravalent Dengue Vaccine (TDV) | Geometric Mean Titers (GMTs) of Neutralizing Antibodies for Each of the 4 Dengue Serotypes at Day 270 | DENV-2 | 740.9 titer |
Secondary
Percentage of Participants With Any Unsolicited Adverse Events (AEs) Following Each Vaccination
An AE is defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment.
Time frame: Within 28 days after each vaccination
Population: Safety Set included of all participants who received at least 1 dose of trial vaccine. Number analyzed is the number of participants with data available at the given timepoint. Only categories for which there was at least 1 participant are reported.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Placebo | Percentage of Participants With Any Unsolicited Adverse Events (AEs) Following Each Vaccination | After First Vaccination | 25.0 percentage of participants |
| Placebo | Percentage of Participants With Any Unsolicited Adverse Events (AEs) Following Each Vaccination | After Second Vaccination | 17.9 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Any Unsolicited Adverse Events (AEs) Following Each Vaccination | After First Vaccination | 30.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Any Unsolicited Adverse Events (AEs) Following Each Vaccination | After Second Vaccination | 23.2 percentage of participants |
Secondary
Percentage of Participants With Medically Attended AEs (MAAEs) Throughout the Study
MAAEs were defined as AEs leading to a medical visit to or by a healthcare professional including visits to an emergency department, but not fulfilling seriousness criteria.
Time frame: From first vaccination (Day 1) through end of study (Day 270)
Population: Safety Set included of all participants who received at least 1 dose of trial vaccine.
| Arm | Measure | Value (NUMBER) |
|---|---|---|
| Placebo | Percentage of Participants With Medically Attended AEs (MAAEs) Throughout the Study | 38.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Medically Attended AEs (MAAEs) Throughout the Study | 47.3 percentage of participants |
Secondary
Percentage of Participants With Serious Adverse Events (SAEs) Throughout the Study
An SAE was defined as any untoward medical occurrence or effect that results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or is medically important due to other reasons than the above mentioned criteria.
Time frame: From first vaccination (Day 1) through end of study (Day 270)
Population: Safety Set included of all participants who received at least 1 dose of trial vaccine.
| Arm | Measure | Value (NUMBER) |
|---|---|---|
| Placebo | Percentage of Participants With Serious Adverse Events (SAEs) Throughout the Study | 2.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Serious Adverse Events (SAEs) Throughout the Study | 0.3 percentage of participants |
Secondary
Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity
Solicited local AEs (at injection site) were collected by participants using diary cards within 7 days after vaccination and included pain (none, mild: no interference with daily activity, moderate: interference with daily activity with or without treatment and severe: prevents daily activity with or without treatment), redness (erythema) (\<2.5 cm, mild: 2.5-5 cm, moderate: \>5 to \<=10 cm, severe: \>10 cm) and swelling (edema/induration) (\<2.5 cm, mild: 2.5-5 cm, moderate: \>5 to \<=10 cm, severe: \>10 cm).
Time frame: Within 7 days after each vaccination
Population: Safety Set included of all participants who received at least 1 dose of trial vaccine. Number analyzed is the number of participants with data available at the given timepoint. Only categories for which there was at least 1 participant are reported.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Pain:Moderate | 7.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Pain:Mild | 24.5 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Erythema:Mild | 0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Pain:Moderate | 5.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Pain:Mild | 26.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Pain:Severe | 1.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Swelling:Mild | 0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Erythema:Mild | 0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Pain:Severe | 1.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Swelling:Mild | 0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Any Solicited Local AEs | 30.9 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Swelling:Moderate | 0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Any Solicited Local AEs | 34.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Swelling:Moderate | 0.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Any Solicited Local AEs | 56.2 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Pain:Mild | 44.8 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Pain:Moderate | 9.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Pain:Severe | 0.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Erythema:Mild | 5.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination, Swelling:Mild | 4.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Any Solicited Local AEs | 52.2 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Pain:Mild | 35.6 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Pain:Moderate | 13.2 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Pain:Severe | 3.1 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Erythema:Mild | 4.1 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Local (Injection Site) Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination, Swelling:Mild | 1.7 percentage of participants |
Secondary
Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity
Solicited systemic AEs were collected by participants using diary cards within 14 days after vaccination and included fever, headache, tiredness or weakness (asthenia), feeling of discomfort (malaise) and muscle pain (myalgia). Severity scales for headache were none, mild: no interference with daily activity, moderate: interference with daily activity with or without treatment and severe: prevents normal activity with or without treatment. Severity scales for others were none, mild: no interference with daily activity, moderate: interference with daily activity and severe: prevents daily activity. A systemic AE of fever (defined as ≥38°C or ≥100.4°F) was derived from a daily temperature reading recorded within 14 days after vaccination. Fever was excluded from the overall count as no severity grading was applied for it.
Time frame: Within 14 days after each vaccination
Population: Safety Set included of all participants who received at least 1 dose of trial vaccine. Number analyzed is the number of participants with data available at the given timepoint. Only categories for which there was at least 1 participant are reported.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccine: Any Solicited Systemic AEs | 45.7 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Asthenia-Moderate | 13.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Headache-Mild | 20.2 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Myalgia-Mild | 26.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Headache-Moderate | 6.4 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Headache-Severe | 1.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Headache-Severe | 3.2 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Myalgia-Moderate | 13.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Asthenia-Mild | 22.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Asthenia-Severe | 2.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Asthenia-Moderate | 4.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Myalgia-Severe | 1.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Asthenia-Severe | 1.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Headache-Moderate | 18.2 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Malaise-Mild | 12.8 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever-Any | 5.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Malaise-Moderate | 6.4 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Malaise-Mild | 20.2 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Malaise-Severe | 4.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (38.0°C-<38.5°C) | 3.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Myalgia-Mild | 21.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Asthenia-Mild | 20.2 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Myalgia-Moderate | 8.5 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (38.5°C-<39.0°C) | 2.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Myalgia-Severe | 1.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Malaise-Moderate | 11.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever-Any | 3.2 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (39.0°C-<39.5°C) | 0.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (38.0°C-<38.5°C) | 1.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Headache-Mild | 25.3 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (38.5°C-<39.0°C) | 1.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (39.5°C-<40.0°C) | 0.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (39.0°C-<39.5°C) | 1.1 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Malaise-Severe | 2.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (39.5°C-<40.0°C) | 0.0 percentage of participants |
| Placebo | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Any Solicited Systemic AE | 58.6 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (39.5°C-<40.0°C) | 0.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Any Solicited Systemic AE | 66.6 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Headache-Mild | 31.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Headache-Moderate | 10.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Headache-Severe | 2.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Asthenia-Mild | 24.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Asthenia-Moderate | 7.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Asthenia-Severe | 2.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Malaise-Mild | 18.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Malaise-Moderate | 7.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Malaise-Severe | 1.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Myalgia-Mild | 36.1 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Myalgia-Moderate | 10.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination: Myalgia-Severe | 1.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever-Any | 6.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (38.0°C-<38.5°C) | 3.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (38.5°C-<39.0°C) | 2.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (39.0°C-<39.5°C) | 1.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After First Vaccination:Fever (39.5°C-<40.0°C) | 0.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccine: Any Solicited Systemic AEs | 49.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Headache-Mild | 24.3 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Headache-Moderate | 8.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Headache-Severe | 2.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Asthenia-Mild | 19.9 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Asthenia-Moderate | 6.8 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Asthenia-Severe | 1.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Malaise-Mild | 16.2 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Malaise-Moderate | 5.1 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Malaise-Severe | 2.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Myalgia-Mild | 25.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Myalgia-Moderate | 6.8 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination: Myalgia-Severe | 2.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever-Any | 6.8 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (38.0°C-<38.5°C) | 3.7 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (38.5°C-<39.0°C) | 2.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Percentage of Participants With Solicited Systemic Adverse Events (AEs) (Diary Recorded) Following Each Vaccination by Severity | After Second Vaccination:Fever (39.0°C-<39.5°C) | 0.7 percentage of participants |
Secondary
Seropositivity Rates for Each of the 4 Dengue Serotypes
Seropositivity rate, defined as the percentage of participants seropositive, was derived from the titers of dengue-neutralizing antibodies. Seropositivity defined as a reciprocal neutralizing titer ≥10. The 4 dengue virus serotypes were DENV-1, DENV-2, DENV-3 and DENV-4.
Time frame: One month and six months post second dose (Day 120 and Day 270)
Population: PPS: all participants seronegative to all serotypes of dengue virus at baseline who received at least 1 dose of trial vaccine, who had a valid pre-dose (baseline) and at least 1 valid post-dose measurement for immunogenicity and no major protocol violations. Number analyzed: participants with data available at given time-point.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-1 | 2.7 percentage of participants |
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-3 | 1.4 percentage of participants |
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-2 | 1.4 percentage of participants |
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-2 | 8.3 percentage of participants |
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-3 | 2.7 percentage of participants |
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-4 | 1.4 percentage of participants |
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-4 | 0 percentage of participants |
| Placebo | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-1 | 1.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-4 | 89.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-2 | 100.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-3 | 100.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-4 | 99.6 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-1 | 98.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-2 | 99.6 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 270 (Month 9): DENV-3 | 92.1 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Each of the 4 Dengue Serotypes | Day 120 (Month 4): DENV-1 | 100.0 percentage of participants |
Secondary
Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes
Seropositivity rate, defined as the percentage of participants seropositive, was derived from the titers of dengue-neutralizing antibodies. Seropositivity was defined as a reciprocal neutralizing titer ≥10.
Time frame: One month and six months post second dose (Day 120 and Day 270)
Population: PPS: all participants seronegative to all serotypes of dengue virus at baseline who received at least 1 dose of trial vaccine, who had a valid pre-dose (baseline) and at least 1 valid post-dose measurement for immunogenicity and no major protocol violations. Number analyzed: participants with data available at given time-point.
| Arm | Measure | Group | Value (NUMBER) |
|---|---|---|---|
| Placebo | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 270 (Month 9): At Least Bivalent | 0 percentage of participants |
| Placebo | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 120 (Month 4): At Least Trivalent | 1.4 percentage of participants |
| Placebo | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 270 (Month 9): At Least Trivalent | 0 percentage of participants |
| Placebo | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 120 (Month 4): At Least Bivalent | 1.4 percentage of participants |
| Placebo | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 270 (Month 9): Tetravalent | 0 percentage of participants |
| Placebo | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 120 (Month 4): Tetravalent | 1.4 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 270 (Month 9): Tetravalent | 85.8 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 120 (Month 4): At Least Bivalent | 100.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 120 (Month 4): At Least Trivalent | 100.0 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 270 (Month 9): At Least Bivalent | 99.2 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 270 (Month 9): At Least Trivalent | 94.5 percentage of participants |
| Tetravalent Dengue Vaccine (TDV) | Seropositivity Rates for Multiple (2, 3 or 4) Dengue Serotypes | Day 120 (Month 4): Tetravalent | 99.6 percentage of participants |