Phase III Randomized, Double-Blind, Placebo-Controlled Study of Acellular and Whole-Cell Pertussis Vaccines

OBJECTIVES: I. Compare the safety and efficacy of acellular 2-component vs. acellular multicomponent vs. whole-cell pertussis vaccine vs. placebo in infants living in Sweden.

II. Compare the relative protection of each vaccine against atypical or subclinical pertussis infection.

III. Analyze possible laboratory correlates to vaccine protection.

Study Overview

Detailed Description

PROTOCOL OUTLINE: This is a randomized, double-blind study. Patients are stratified by participating institution.

The first group of infants receives a vaccine composed of inactivated pertussis toxin (iPT) and filamentous hemagglutin (FHA).

The second group receives a vaccine containing iPT, FHA, pertactin, agglutinogen 2, and agglutinogen 3.

The third group receives a whole-cell pertussis vaccine. The fourth group receives a diphtheria-tetanus vaccine as the control. All vaccines are given as an intramuscular injection, at 2-3, 4, and 6 months of age.

Close surveillance of infants and families continues for 2-3 years.

Study Type

Interventional

Enrollment

10000

Phase

  • Phase 3

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

2 months to 3 months (Child)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

PROTOCOL ENTRY CRITERIA:

--Population Characteristics--

  • Infants aged 2 months at planned date of first vaccination
  • No prior pertussis confirmed by culture
  • The following do not exclude: Down syndrome Prematurity Healthy babies vaccinated according to chronological age Recent pertussis exposure Seizures in parent or sibling Sudden infant death in sibling Close relative with history of anaphylaxis or allergy Close relative with history of strong reaction to vaccination

--Patient Characteristics--

  • Age: Under 3 months
  • Renal: No renal failure
  • Other: No prior gammaglobulin No requirement for immunosuppressives, e.g., HIV infection No manifest immunosuppression No serious chronic illness associated with failure to thrive No cardiac disease No progressive neurologic disease No uncontrolled epilepsy or infantile spasms No parental language or communication barrier

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Masking: Double

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Chair: Patrick Olin, National Bacteriological Laboratory

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 1991

Study Registration Dates

First Submitted

February 24, 2000

First Submitted That Met QC Criteria

February 24, 2000

First Posted (Estimate)

February 25, 2000

Study Record Updates

Last Update Posted (Estimate)

June 24, 2005

Last Update Submitted That Met QC Criteria

June 23, 2005

Last Verified

January 1, 1997

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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