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Descriptive, Open-label, Multicenter Study of the Safety of Redosing With ADACEL® Vaccine

Safety Among Adolescents and Adults of Revaccination With Tetanus Toxoid, Reduced Diphtheria Toxoid and Acellular Pertussis Vaccine Adsorbed (Adacel®) 4 to 5 Years After a Previous Dose

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00347958
Enrollment
545
Registered
2006-07-04
Start date
2006-08-31
Completion date
2008-10-31
Last updated
2013-12-04

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

Conditions

Diphtheria, Pertussis, Tetanus

Keywords

Tetanus,, Diphtheria,, Pertussis

Brief summary

Objectives: To provide safety data on revaccination with ADACEL® vaccine. To describe the immune response to tetanus, diphtheria, and pertussis antigens following revaccination with ADACEL® vaccine 4-5 years after first vaccination.

Interventions

BIOLOGICALTetanus-diphtheria-acellular pertussis (Tdap) vaccine

0.5mL, Intramuscular (IM)

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
15 Years to 69 Years
Healthy volunteers
Yes

Inclusion criteria

* Previously received ADACEL vaccine as part of Aventis Pasteur studies Td501, Td502, or Td505. * At least 15 but no greater than 69 years of age at the time of vaccination in this trial. * Signed Institutional Review Board (IRB)-approved informed assent / consent form. * Able to attend all scheduled visits and to comply with all trial procedures. * For a woman, inability to become pregnant or negative serum/urine pregnancy test.

Exclusion criteria

* Any condition which, in the opinion of the investigator, would pose a health risk to the participant or interfere with the evaluation of the vaccine. * Serious chronic disease (ie, cardiac, renal, neurologic, metabolic, rheumatologic, psychiatric) that is unstable or that might: * interfere with the ability to participate fully in the study; or * interfere with evaluation of the vaccine. * Known or suspected impairment of immunologic function. * Febrile illness within the last 72 hours or an oral temperature ≥100.4°F (≥38°C) at the time of inclusion. * History of documented tetanus, diphtheria or pertussis disease within the preceding 5 years. * Known or suspected receipt of a tetanus-, diphtheria- or pertussis-containing vaccine since participation in Study Td501, Td502, or Td505. (Receipt of Menactra vaccine at any time prior to the present study is permitted, subject to the next exclusion criterion). * Received any vaccine, other than influenza vaccine, in the 28-day period prior to enrollment or scheduled to receive any vaccine, other than influenza vaccine, in the 28-day period after enrollment. For influenza vaccine only, defer if received in the 14-day period prior to enrollment or scheduled to receive in the 14-day period after enrollment * Administration of immune globulin or other blood products within the last three months, or injected or oral corticosteroids or other immunomodulator therapy within six weeks of the study vaccine. Individuals on a tapering dose schedule of oral steroids lasting less than 7 days may be included in the trial as long as they have not received more than one course within the last two weeks prior to enrollment. * Suspected or known hypersensitivity to any of the vaccine components or to latex. * Unable to attend the scheduled visits or to comply with the study procedures. * In females of childbearing potential, a positive or equivocal urine pregnancy test at enrollment. * Nursing mother. * Participation in another interventional clinical trial in the 4 weeks preceding enrollment or planning to participate in another interventional clinical trial during the planned period of this study. * Current abuse of alcohol or drug addiction that may interfere with the subject's ability to comply with trial visits or procedures. * Thrombocytopenia or bleeding disorder contraindicating intramuscular (IM) vaccination. * Subject deprived of freedom by an administrative or court order, or under the stress of an emergency setting, or hospitalized without his/her consent.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-Vaccination0-14 days post-vaccinationSolicited Injection Site Reactions: Pain, Erythema/Redness, Swelling. Solicited Systemic Reactions: Fever (Temperature), Headache, Myalgia, Malaise.

Other

MeasureTime frameDescription
Geometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.Day 28 post-vaccinationPre- and post-vaccination GMTs and their 95% confidence intervals for diphtheria were determined by toxin neutralization testing; the other antibody levels were determined by enzyme-linked immunosorbent assay testing.
Geometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Day 28 post-vaccinationPre- and post-vaccination GMTs and their 95% confidence intervals for Pertussis were determined by enzyme-linked immunosorbent assay testing.
Percentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®Day 28 post-vaccinationSeroprotection: Tetanus or diphtheria titer ≥ 0.1 after Adacel® vaccination. Tetanus titers determined by enzyme-linked immunosorbent assay; diphtheria titers determined by toxin neutralization assay.

Countries

Canada, United States

Participant flow

Recruitment details

Participants were enrolled from 21 August 2006, to 12 April 2007, in 6 clinical centers in the US and 6 clinical centers in Canada.

Pre-assignment details

A total of 545 participants were enrolled and vaccinated in the study. Data on 544 participants that met the inclusion and exclusion criteria were analyzed and reported. One participant who did not receive Adacel® vaccine in one of the previous studies was excluded from the Safety Analysis Set.

Participants by arm

ArmCount
Adacel® Vaccine Group
Participants 15 to 69 years of age who received a dose of Adacel vaccine in one of three previous studies (Td501, or Td502, or Td505), revaccinated in Study Td518.
544
Total544

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event1
Overall StudyProtocol Violation2
Overall StudyWithdrawal by Subject1

Baseline characteristics

CharacteristicAdacel® Vaccine Group
Age, Categorical
<=18 years
169 Participants
Age, Categorical
>=65 years
7 Participants
Age, Categorical
Between 18 and 65 years
368 Participants
Age Continuous31.7 Years
STANDARD_DEVIATION 15.7
Region of Enrollment
Canada
350 participants
Region of Enrollment
United States
194 participants
Sex: Female, Male
Female
284 Participants
Sex: Female, Male
Male
260 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
479 / 544
serious
Total, serious adverse events
7 / 544

Outcome results

Primary

Percentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-Vaccination

Solicited Injection Site Reactions: Pain, Erythema/Redness, Swelling. Solicited Systemic Reactions: Fever (Temperature), Headache, Myalgia, Malaise.

Time frame: 0-14 days post-vaccination

Population: Safety analysis was on all enrolled and vaccinated participants with available reaction data, intent-to-treat population.~The solicited systemic reaction, malaise was not collected in the previous studies.

ArmMeasureGroupValue (NUMBER)
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Solicited Injection Site Reaction89 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Injection Site Pain88 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationGrade 3 Injection Site Pain (Incapacitating)2 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Injection Site Erythema/Redness29 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationGrade 3 Injection Site Erythema/Redness (≥ 5 cm)3 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Injection Site Swelling26 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationGrade 3 Injection Site Swelling (≥ 5 cm)3 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Fever7 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationGrade 3 Fever (> 39.0 ºC or > 102.2 ºF)1 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Headache53 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationGrade 3 Headache (Prevents daily activities)3 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Myalgia61 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationGrade 3 Myalgia (Prevents daily activities)4 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationAny Malaise38 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With at Least 1 Solicited Injection Site and Systemic Reactions Post-VaccinationGrade 3 Malaise (Prevents daily activities)3 Percentage of Participants
Other Pre-specified

Geometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.

Pre- and post-vaccination GMTs and their 95% confidence intervals for Pertussis were determined by enzyme-linked immunosorbent assay testing.

Time frame: Day 28 post-vaccination

Population: Geometric mean titers were assessed in the per-protocol population.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis FIM (EU/mL) Pre-Dose, n = 445165 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis PT (EU/mL) Pre-Dose, n = 38121.3 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis PT (EU/mL) Post-Dose, n = 425104 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis FHA (EU/mL) Pre-Dose, n = 45034.6 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis FHA (EU/mL) Post-Dose, n = 450201 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis PRN (EU/mL) Pre-Dose, n = 45137.3 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis PRN (EU/mL) Post-Dose, n = 451218 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Pertussis Antibodies Pre- and Post-Vaccination.Pertussis FIM (EU/mL) Post-Dose, n = 450749 Titers
Other Pre-specified

Geometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.

Pre- and post-vaccination GMTs and their 95% confidence intervals for diphtheria were determined by toxin neutralization testing; the other antibody levels were determined by enzyme-linked immunosorbent assay testing.

Time frame: Day 28 post-vaccination

Population: Geometric mean titers were assessed in the per-protocol population.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.Tetanus (IU/mL) Pre-Dose, n = 4451.41 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.Tetanus (IU/mL) Post-Dose, n = 4459.62 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.Diphtheria (IU/mL) no Menactra Pre-Dose, n = 3790.133 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.Diphtheria (IU/mL) no Menactra Post-Dose n = 3792.17 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.Diphtheria (IU/mL) with Menactra Pre-Dose n = 644.45 Titers
Adacel® Vaccine GroupGeometric Mean Titers (GMTs) of Tetanus and Diphtheria Antibodies Pre- and Post-Vaccination.Diphtheria (IU/mL) with Menactra Post-Dose n = 648.70 Titers
Other Pre-specified

Percentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®

Seroprotection: Tetanus or diphtheria titer ≥ 0.1 after Adacel® vaccination. Tetanus titers determined by enzyme-linked immunosorbent assay; diphtheria titers determined by toxin neutralization assay.

Time frame: Day 28 post-vaccination

Population: Tetanus and diphtheria antibody analyses were in all enrolled and vaccinated participants in the per-protocol population. Diphtheria antibody titers were analyzed separately for participants without and with an intervening Menactra vaccination between the previous study and Study Td518.

ArmMeasureGroupValue (NUMBER)
Adacel® Vaccine GroupPercentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®Tetanus (IU/mL) Pre-Dose96 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®Tetanus (IU/mL) Post-Dose100 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®Diphtheria (IU/mL) without Menactra, Pre-Dose61 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®Diphtheria (IU/mL) without Menactra, Post-Dose95 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®Diphtheria (IU/mL) Menactra, Pre-Dose95 Percentage of Participants
Adacel® Vaccine GroupPercentage of Participants With Tetanus and Diptheria Antibody Titers ≥ 0.1 Pre- and Post-Vaccination With Adacel®Diphtheria (IU/mL) Menactra, Post-Dose100 Percentage of Participants

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026