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Study of DAPTACEL® Administered as a 5th Dose in 4 to 6-Year-Old Children Previously Immunized With PENTACEL™

Safety and Immunogenicity of DAPTACEL® (CP10/5/5/3DT Aventis Pasteur 5-component Pertussis Vaccine in Combination With Tetanus and Diphtheria Toxoids Adsorbed) Administered as a 5th Dose in 4 to 6-Year-Old Children Previously Immunized With PENTACEL™ (HCP20/20/5/3DT-mIPV//PRP-T)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00802867
Enrollment
989
Registered
2008-12-05
Start date
2004-02-29
Completion date
2005-09-30
Last updated
2016-04-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diphtheria, Haemophilus Infection, Pertussis, Polio, Tetanus

Keywords

DAPTACEL®, PENTACEL™, Diphtheria, Tetanus, Pertussis, Haemophilus influenzae type b

Brief summary

Objectives: * To present the rates of adverse reactions after a dose of DAPTACEL® vaccine administered to children 4 to 6 years of age who have previously received four doses of PENTACEL™ vaccine. * To present immunogenicity before and after a single dose of DAPTACEL® vaccine administered to children 4 to 6 years of age who have previously received four doses of PENTACEL™ vaccine.

Detailed description

This study is designed to assess the safety and immunogenicity of DAPTACEL® vaccine administered at 4 to 6 years of age according to the US standard of care. The study population consists of PENTACEL™-primed subjects from Aventis Pasteur's pivotal studies 494-01 and 494-03. These children will receive DAPTACEL® vaccine as a 5th dose immunization between 4 to 6 years of age.

Interventions

BIOLOGICALDiphtheria and Tetanus Toxoids and Acellular Pertussis (DAPTACEL®)

0.5 mL, Intramuscular

Sponsors

Sanofi Pasteur, a Sanofi Company
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
4 Years to 6 Years
Healthy volunteers
Yes

Inclusion criteria

: * Aged ≥ 4 years and 6 years. * Signed and dated Investigational Review Board-approved informed consent from a parent or legally authorized representative. * Judged to be in good health on the basis of reported medical history and physical examination. * Able and willing to attend the scheduled visits and to comply with the study procedures. * Has documented complete infant series and 4th dose in Study 494-01 or Study 494-03, consisting of four previous administrations of PENTACEL™.

Exclusion criteria

: * Received a 5th dose of DTaP-containing vaccine scheduled at 4 to 6 years of age. * Serious underlying chronic disease, including, but not limited to: * Diabetes mellitus; malignancy; cardiopulmonary disease; renal, endocrinologic, or hepatic dysfunction; or hematologic disorder; or * Unstable or evolving neurologic disorders that may predispose the subject to seizures or neurologic deterioration. * Known or suspected primary or acquired disease of the immune system. * Administration of immune globulin or other blood products within the last 3 months, or injected or oral corticosteroids or other immunomodulatory therapy within 6 weeks of the study vaccine. Individuals on a tapering dose schedule of oral steroids lasting \<7 days may be included in the trial as long as they have not received more than 1 course within the last 2 weeks prior to enrollment. * Had allergy shots started or had changes in regimen or dosing of allergy shots within the last 4 weeks. * Receipt of any other vaccine within the past 30 days, or planning to receive another vaccine within 30 days before the Visit 2 blood draw, with the exclusion of M-M-R®II and IPV. * Any other condition which, in the opinion of the Investigator, would pose a health risk to the subject or interfere with the evaluation of the vaccine. * Enrolled in another vaccine trial. * Personal history of physician-diagnosed or laboratory-confirmed pertussis disease within the past 30 months. * Known or suspected allergy to any of the vaccines or vaccine components intended for use in this study. Temporary contraindications: * A subject who meets either of the following criteria at the time of planned vaccination will have enrollment deferred until complete resolution of symptoms: Oral temperature ≥ 100.4°F (≥ 38.0ºC) (Note: A tympanic thermometer should not be used). * Any moderate or severe acute illness with or without fever.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®0 to 3 days post-dose 5 vaccinationSolicited local reactions: Redness, swelling, tenderness at injection site, change in limb circumference, and limb function. Systemic reactions: Fever (temperature), irritability, crying, lethargy, appetite decreased, vomiting, diarrhea, and rash.

Other

MeasureTime frameDescription
Percentage of Participants With 4-Fold Rises in Anti-Pertussis Post-vaccination With DAPTACEL® as a Fifth Dose.Day 28 to 48 Post-dose 5Anti-pertussis (anti-Pertussis, anti-Filamentous Haemagglutinin, anti-Fimbriae, and anti-Pertactin). Fold-rise is calculated as Post-Dose 5/Pre-Dose 5 titer.
Percentage of Participants With Anti-Pertussis Booster Response Post-vaccination With DAPTACEL® as a Fifth DoseDay 28 to 48 Post-dose 5Booster response calculation: If Pre-Dose 5 titer \< 4x limit of quantitation (LOQ), a 4-fold rise of Post-dose 5/Pre-dose 5; If Pre-dose 5 titer ≥ 4x LOQ, a 2-fold rise of Post-dose 5/Pre-dose 5.
Percentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseDay 28 to 48 Post-dose 5Seroprotection is defined as a titer of ≥ 0.01 IU/mL for both Diphtheria and Tetanus before the fifth dose booster vaccination
Geometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DosePre-dose 5 and Day 28 to 48 Post-dose 5

Countries

United States

Participant flow

Recruitment details

Participants were enrolled from 05 February through 30 November 2004 at 19 US sites.

Pre-assignment details

A total of 989 participants were enrolled and vaccinated with DAPTACEL as the fifth dose after receiving 4 doses of Pentacel vaccine in previous studies.

Participants by arm

ArmCount
DAPTACEL® Vaccine Group
Participants received DAPTACEL® as the 5th dose after 4 doses of Pentacel® in Study 494-01 or Study 494-03.
989
Total989

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyLost to Follow-up6
Overall StudyProtocol Violation6
Overall StudyWithdrawal by Subject1

Baseline characteristics

CharacteristicDAPTACEL® Vaccine Group
Age, Categorical
<=18 years
989 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants
Age, Continuous4.2 Years
STANDARD_DEVIATION 0.15
Region of Enrollment
United States
989 participants
Sex: Female, Male
Female
514 Participants
Sex: Female, Male
Male
475 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
49 / 989
serious
Total, serious adverse events
10 / 989

Outcome results

Primary

Percentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®

Solicited local reactions: Redness, swelling, tenderness at injection site, change in limb circumference, and limb function. Systemic reactions: Fever (temperature), irritability, crying, lethargy, appetite decreased, vomiting, diarrhea, and rash.

Time frame: 0 to 3 days post-dose 5 vaccination

Population: Safety analysis was on all enrolled and vaccinated participants intend-to-treat population.

ArmMeasureGroupValue (NUMBER)
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Tenderness50 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Irritability23 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Rash Present5 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Solicited Systemic Reaction Post-dose 562 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Redness (> 5 mm)20 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Redness (> 50 mm)7 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Swelling (> 5 mm)12 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Swelling (> 50 mm)3 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Tenderness (Incapacitating)0 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Change in Limb Circumference (> 5 mm)29 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Change in Limb Circumference (> 40 mm)1 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Functional Impairment9 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Functional Impairment (Incapacitating)0 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Solicited Systemic Reaction Post-dose 537 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Fever (≥ 38 ºC)5 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Fever (> 39.5 ºC)0 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Irritability (Incapacitating)1 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Crying7 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Crying (Incapacitating)0 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Lethargy13 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Lethargy (Incapacitating)0 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Anorexia11 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Anorexia (Skips 2 meals)1 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Vomiting3 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Vomiting (≥ 3 episodes)1 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Any Diarrhea4 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Solicited Local or Systemic Reactions Post-vaccination With DAPTACEL® as the Fifth Dose After 4 Doses of Pentacel®Grade 3 Diarrhea (> 5 diarrhea stools)0 Percentage of Participants
Other Pre-specified

Geometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth Dose

Time frame: Pre-dose 5 and Day 28 to 48 Post-dose 5

Population: The GMTs of anti-Pertussis, anti-Diphtheria, and anti-Tetanus Toxoids Responses were evaluated in a subset of the per-protocol population for immunogenicity.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Pertussis (EU/mL) - Pre-dose 512.73 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Pertussis (EU/mL) - Post-dose 5309.64 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Filamentous Haemagglutinin (EU/mL) Pre-dose 59.90 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Filamentous Haemagglutinin (EU/mL) Post-dose5158.27 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Fimbriae Types 2 and 3 (EU/mL) Pre-dose 540.62 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Fimbriae Types 2 and 3 (EU/mL) Post-dose 5659.28 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Pertactin (EU/mL) Pre-dose 510.36 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Pertactin (EU/mL) Post-dose 5140.86 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Diphtheria (IU/mL) Pre-dose 50.25 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Diphtheria (IU/mL) Post-dose 518.98 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Tetanus (IU/mL) Pre-dose 50.38 Titers
DAPTACEL® Vaccine GroupGeometric Mean Titers (GMTs) of Anti-Pertussis, Anti-Diphtheria, and Anti-Tetanus Toxoids Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Tetanus (IU/mL) Post-dose 54.30 Titers
Other Pre-specified

Percentage of Participants With 4-Fold Rises in Anti-Pertussis Post-vaccination With DAPTACEL® as a Fifth Dose.

Anti-pertussis (anti-Pertussis, anti-Filamentous Haemagglutinin, anti-Fimbriae, and anti-Pertactin). Fold-rise is calculated as Post-Dose 5/Pre-Dose 5 titer.

Time frame: Day 28 to 48 Post-dose 5

Population: The vaccine antibody responses were evaluated in a subset of the per-protocol population for immunogenicity.

ArmMeasureGroupValue (NUMBER)
DAPTACEL® Vaccine GroupPercentage of Participants With 4-Fold Rises in Anti-Pertussis Post-vaccination With DAPTACEL® as a Fifth Dose.Anti-Pertussis (EU/mL) ≥ 4-Fold Rise94 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With 4-Fold Rises in Anti-Pertussis Post-vaccination With DAPTACEL® as a Fifth Dose.Anti-Filamentous Haemagglutinin ≥ 4-Fold Rise91 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With 4-Fold Rises in Anti-Pertussis Post-vaccination With DAPTACEL® as a Fifth Dose.Anti-Fimbriae Types 2 and 3 ≥ 4-Fold Rise91 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With 4-Fold Rises in Anti-Pertussis Post-vaccination With DAPTACEL® as a Fifth Dose.Anti-Pertactin (EU/mL) ≥ 4-Fold Rise90 Percentage of Participants
Other Pre-specified

Percentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth Dose

Seroprotection is defined as a titer of ≥ 0.01 IU/mL for both Diphtheria and Tetanus before the fifth dose booster vaccination

Time frame: Day 28 to 48 Post-dose 5

Population: The anti-Diphtheria and anti-Tetanus Toxoids Responses were evaluated in a subset of the per-protocol population for immunogenicity.

ArmMeasureGroupValue (NUMBER)
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Diphtheria (IU/mL) ≥0.01 Pre-dose 5100 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Diphtheria (IU/mL) ≥0.1 Pre-dose 577 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Diphtheria (IU/mL) ≥1.0 Pre-dose 59 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Diphtheria (IU/mL) ≥0.1 Post-dose 5100 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Diphtheria (IU/mL) ≥1.0 Post-dose 5100 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Tetanus (IU/mL) ≥0.01 Pre-dose 5100 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Tetanus (IU/mL) ≥0.1 Pre-dose 592 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Tetanus (IU/mL) ≥1.0 Pre-dose 513 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Tetanus (IU/mL) ≥0.1 Post-dose 5100 Percentage of Participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Diphtheria and Anti-Tetanus Seroprotection Pre- and Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Tetanus (IU/mL) ≥1.0 Post-dose 596 Percentage of Participants
Other Pre-specified

Percentage of Participants With Anti-Pertussis Booster Response Post-vaccination With DAPTACEL® as a Fifth Dose

Booster response calculation: If Pre-Dose 5 titer \< 4x limit of quantitation (LOQ), a 4-fold rise of Post-dose 5/Pre-dose 5; If Pre-dose 5 titer ≥ 4x LOQ, a 2-fold rise of Post-dose 5/Pre-dose 5.

Time frame: Day 28 to 48 Post-dose 5

Population: The anti-Pertussis Booster response was evaluated in a subset of the per-protocol population for immunogenicity.

ArmMeasureGroupValue (NUMBER)
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Pertussis Booster Response Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Pertactin (EU/mL)95 Percentage of participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Pertussis Booster Response Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Pertussis (EU/mL)98 Percentage of participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Pertussis Booster Response Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Filamentous Haemagglutinin97 Percentage of participants
DAPTACEL® Vaccine GroupPercentage of Participants With Anti-Pertussis Booster Response Post-vaccination With DAPTACEL® as a Fifth DoseAnti-Fimbriae Types 2 and 396 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026