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A Study to Determine the Seroprevalence of Bordetella Pertussis in Adults in Hungary

Seroprevalence of Bordetella Pertussis in Adults in Hungary

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02014519
Enrollment
2000
Registered
2013-12-18
Start date
2014-04-24
Completion date
2015-04-24
Last updated
2019-11-26

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

Conditions

Pertussis, Pertussis Vaccines

Keywords

Adults, Hungary, Bordetella pertussis, Seroprevalence, Pertussis antibodies

Brief summary

The purpose of this study is to perform an epidemiological survey of the adult population in Hungary to calculate the seroprevalence of pertussis.

Detailed description

The protocol posting was amended to correct the detailed title. Since a sample of blood will be collected from all subjects (outside of routine hospital procedure), the study does not meet GSK's definition of an observational study and hence the term observational was deleted from the detailed title.

Interventions

PROCEDUREBlood sampling

A blood sample (2.5 mL) will be collected from all subjects

OTHERData collection

Active questioning

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Subjects who the investigator believes can and will comply with the requirements of the protocol. * Written informed consent will be obtained from subjects prior to performing any study procedures. * Males or females ≥ 18 years of age at the time of enrollment. * Agreeing to collection of a blood sample for the study.

Exclusion criteria

• Confirmed or suspected immunological disorder.

Design outcomes

Primary

MeasureTime frameDescription
Number of Seropositive Subjects in Terms of Anti-pertussis Toxin (Anti-PT) ConcentrationsAt the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 Optical Density (OD) units)
Number of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent InfectionAt the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels strongly indicative of current/recent infection was greater than or equal to (≥) 1.5 OD units
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent InfectionAt the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.
Number of Seronegative Subjects in Terms of Anti-PT ConcentrationsAt the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)

Secondary

MeasureTime frameDescription
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Age)At the time of enrollment of each subject (Day 0).Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units).
Number of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Age)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels strongly indicative of current/recent infection was greater than or equal to (≥) 1.5 OD units
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Age)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Age)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Gender)At the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)
Number of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Gender)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels strongly indicative of current/recent infection was greater than or equal to (≥) 1.5 OD units
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Gender)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Gender)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)
Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Gender)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units.
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)At the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units). A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units). A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units. A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.
Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units. A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Smoking Status)At the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Smoking Status)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Smoking Status)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.
Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Smoking Status)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units.
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)At the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Pertussis)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.
Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Pertussis)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units.
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)At the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.
Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was smaller than (\<) 1.0 OD units.
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Medication)At the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units). Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Medication)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units). Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Medication)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units. Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.
Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Medication)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was smaller than (\<) 1.0 OD units. Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.
Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Hospitalization)At the time of enrollment of each subject (Day 0)Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units). History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.
Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Hospitalization)At the time of enrollment of each subject (Day 0)Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units). History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.
Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Hospitalization)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units. History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.
Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Hospitalization)At the time of enrollment of each subject (Day 0)The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units. History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.

Countries

Hungary

Participant flow

Participants by arm

ArmCount
Study Group
Subjects, male and female, aged 18 years and above who had agreed to collection of blood sample.
2,000
Total2,000

Baseline characteristics

CharacteristicStudy Group
Age, Continuous47.4 years
STANDARD_DEVIATION 17.7
Race and Ethnicity Not Collected— Participants
Sex: Female, Male
Female
1213 Participants
Sex: Female, Male
Male
787 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 2,000
other
Total, other adverse events
0 / 0
serious
Total, serious adverse events
0 / 2,000

Outcome results

Primary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations1704 Participants
Primary

Number of Seropositive Subjects in Terms of Anti-pertussis Toxin (Anti-PT) Concentrations

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 Optical Density (OD) units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-pertussis Toxin (Anti-PT) Concentrations295 Participants
Primary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection22 Participants
Primary

Number of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection

The cut-off value for anti-PT IgG levels strongly indicative of current/recent infection was greater than or equal to (≥) 1.5 OD units

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection2 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Age)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Age)341 Participants
30-44 Years GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Age)474 Participants
45-59 Years GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Age)453 Participants
≥ 60 Years GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Age)436 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Gender)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Gender)1052 Participants
30-44 Years GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Gender)652 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)Without history of Pertussis1266 Participants
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)With history of Pertussis73 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of vaccination against pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)Without history of vaccination against Pertussis243 Participants
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)With history of vaccination against Pertussis755 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Hospitalization)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units). History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their hospitalization history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Hospitalization)Without history of hospitalization1694 Participants
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Hospitalization)With history of hospitalization6 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Medication)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units). Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their medication history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Medication)Without history of medication1473 Participants
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Medication)With history of medication202 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units). A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on recent history of long-lasting cough.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)Without long-lasting cough1328 Participants
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)With long-lasting cough197 Participants
Secondary

Number of Seronegative Subjects in Terms of Anti-PT Concentrations (by Smoking Status)

Seronegativity was defined as anti-PT IgG levels under the sensitivity limit of the assay (≤ 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Smoking Status)Never Smoker943 Participants
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Smoking Status)Former Smoker396 Participants
Study GroupNumber of Seronegative Subjects in Terms of Anti-PT Concentrations (by Smoking Status)Current Smoker365 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Age)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units).

Time frame: At the time of enrollment of each subject (Day 0).

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Age)67 Participants
30-44 Years GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Age)67 Participants
45-59 Years GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Age)56 Participants
≥ 60 Years GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Age)105 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Gender)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Gender)160 Participants
30-44 Years GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Gender)135 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)Without history of Pertussis212 Participants
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Pertussis)With history of Pertussis15 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of vaccination against pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)Without history of vaccination against Pertussis38 Participants
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by History of Vaccination Against Pertussis)With history of vaccination against Pertussis127 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Hospitalization)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units). History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their hospitalization history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Hospitalization)Without history of hospitalization290 Participants
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Hospitalization)With history of hospitalization4 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Medication)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units). Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their medication history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Medication)Without history of medication248 Participants
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Medication)With history of medication39 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units). A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on recent history of long-lasting cough.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)Without long-lasting cough240 Participants
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Recent History of Long-lasting Cough)With long-lasting cough30 Participants
Secondary

Number of Seropositive Subjects in Terms of Anti-PT Concentrations (by Smoking Status)

Seropositivity was defined as anti-PT IgG levels above the sensitivity limit of the assay (\> 0.3 OD units)

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Smoking Status)Never Smoker136 Participants
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Smoking Status)Former Smoker86 Participants
Study GroupNumber of Seropositive Subjects in Terms of Anti-PT Concentrations (by Smoking Status)Current Smoker73 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Age)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Age)2 Participants
30-44 Years GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Age)5 Participants
45-59 Years GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Age)4 Participants
≥ 60 Years GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Age)11 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Gender)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Gender)10 Participants
30-44 Years GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Gender)12 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Pertussis)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Pertussis)Without history of Pertussis18 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Pertussis)With history of Pertussis1 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of vaccination against pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)Without history of vaccination against Pertussis2 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)With history of vaccination against Pertussis7 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Hospitalization)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units. History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their hospitalization history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Hospitalization)Without history of hospitalization22 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Hospitalization)With history of hospitalization0 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Medication)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units. Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their medication history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Medication)Without history of medication18 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Medication)With history of medication3 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units. A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on recent history of long-lasting cough.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)Without long-lasting cough17 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)With long-lasting cough4 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Smoking Status)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was greater than or equal to (≥) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Smoking Status)Never Smoker4 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Smoking Status)Former Smoker8 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Indicative of Current/Recent Infection (by Smoking Status)Current Smoker10 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Gender)

The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Gender)775 Participants
30-44 Years GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Gender)1202 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Pertussis)

The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Pertussis)Without history of Pertussis1460 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Pertussis)With history of Pertussis87 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was smaller than (\<) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on history of vaccination against pertussis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)Without history of vaccination against Pertussis279 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by History of Vaccination Against Pertussis)With history of vaccination against Pertussis875 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Hospitalization)

The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units. History of hospitalization was defined as hospitalization due to respiratory infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their hospitalization history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Hospitalization)Without history of hospitalization1962 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Hospitalization)With history of hospitalization10 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Medication)

The cut-off value for anti-PT IgG levels indicative of current/recent infection was smaller than (\<) 1.0 OD units. Medication included any antibiotics and/or other medication (i.e. any cough medicines) for lower respiratory tract infections, Pertussis infections or suspected Pertussis infections in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on their medication history.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Medication)Without Medication1703 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Medication)With Medication238 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)

The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units. A long-lasting cough was defined as any cough that lasted for more than (≥) 3 weeks in the previous 12 months.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available and who provided information on recent history of long-lasting cough.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)Without long-lasting cough1551 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Recent History of Long-lasting Cough)With long-lasting cough223 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Smoking Status)

The cut-off value for anti-PT IgG levels not indicative of current/recent infection was smaller than (\<) 1.0 OD units.

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Smoking Status)Never Smoker1075 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Smoking Status)Former Smoker474 Participants
Study GroupNumber of Subjects With Anti-PT IgG Levels Not Indicative of Current/Recent Infection (by Smoking Status)Current Smoker428 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Age)

The cut-off value for anti-PT IgG levels strongly indicative of current/recent infection was greater than or equal to (≥) 1.5 OD units

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Age)0 Participants
30-44 Years GroupNumber of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Age)1 Participants
45-59 Years GroupNumber of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Age)1 Participants
≥ 60 Years GroupNumber of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Age)0 Participants
Secondary

Number of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Gender)

The cut-off value for anti-PT IgG levels strongly indicative of current/recent infection was greater than or equal to (≥) 1.5 OD units

Time frame: At the time of enrollment of each subject (Day 0)

Population: The analysis was performed on the According-to-Protocol (ATP) cohort included all evaluable subjects for whom valid laboratory test results for anti-pertussis toxin antibodies were available.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Study GroupNumber of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Gender)0 Participants
30-44 Years GroupNumber of Subjects With Anti-PT IgG Levels Strongly Indicative of Current/Recent Infection (by Gender)2 Participants

Source: ClinicalTrials.gov · Data processed: Mar 10, 2026