A Study to Test the Safety and Effectiveness of an Investigational Vaccine in Infants (V419-002)

Bacterial Infections; Virus Diseases Clinical Trial

Official title: Safety, Tolerability, and Immunogenicity of Four Different Formulations of a Liquid Hexavalent Combination Vaccine, HR5I (Haemophilus Influenzae Type b Conjugate, Recombinant Hepatitis B Surface Antigen, Diphtheria Toxoid, Tetanus Toxoid, 5-Component Acellular Pertussis Vaccine, and Inactivated Poliovirus Type 1, 2, and 3), When Administered to Healthy Hepatitis B Vaccine-Naïve Infants at 2, 3, 4, and 12 to 14 Months of Age

Status Completed

Clinical Trial Summary

The purpose of this study is to evaluate the safety, tolerability and immunogenicity of 4 different formulations of the HR5I vaccine (Haemophilus influenzae type b conjugate, recombinant hepatitis B surface antigen, diphtheria, tetanus, 5-component acellular pertussis, and inactivated poliovirus Types 1, 2, and 3). The primary hypothesis is that at least 1 of the 4 formulations of HR5I administered as a primary series at 2, 3, and 4 months of age will be acceptable (similar to targeted rates) with respect to Postdose 3 antibody responses to all antigens.

Clinical Trial Description

Participants will be randomized into 4 arms:

AR51 (12, 10): arm receiving vaccine formulation containing 12 mcg of polyribosylribitol phosphate (PRP) conjugates to tetanus toxoid (PRP-T) and 10 mcg of Hepatitis B surface antigen (HBsAg)

PR51 (3, 10): arm receiving vaccine formulation containing 3 mcg of PRP conjugated to the outer membrane protein complex of Neisseria meningitides (PRP-OMPC) and 10 mcg of HBsAg

PR51 (6, 10): arm receiving vaccine formulation containing 6 mcg of PRP-OMPC and 10 mcg of HBsAg

PR51 (6, 15): arm receiving vaccine formulation containing 6 mcg of PRP-OMPC and 15 mcg of HBsAg ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Prevention

Related Conditions & MeSH terms

• Bacterial Infections
• Bacterial Infections; Virus Diseases
• Virus Diseases

• NCT number: NCT00551629
• Study type: Interventional
• Source: Merck Sharp & Dohme Corp.
• Status: Completed
• Phase: Phase 2
• Start date: May 2001
• Completion date: March 2003