Safety and immunogenicity of a novel recombinant subunit respiratory syncytial virus vaccine (BBG2Na) in healthy young adults

J Infect Dis. 2001 Dec 1;184(11):1456-60. doi: 10.1086/324426. Epub 2001 Nov 13.

Abstract

A novel recombinant respiratory syncytial virus (RSV) subunit vaccine, designated BBG2Na, was administered to 108 healthy adults randomly assigned to receive 10, 100, or 300 microg of BBG2Na in aluminum phosphate or saline placebo. Each subject received 1, 2, or 3 intramuscular injections of the assigned dose at monthly intervals. Local and systemic reactions were mild, and no evidence of harmful properties of BBG2Na was reported. The highest ELISA and virus-neutralizing (VN) antibody responses were evident in the 100- and 300-microg groups; second or third injections provided no significant boosts against RSV-derived antigens. BBG2Na induced > or 2-fold and > or =4-fold increases in G2Na-specific ELISA units in up to 100% and 57% of subjects, respectively; corresponding RSV-A-specific responses were 89% and 67%. Furthermore, up to 71% of subjects had > or =2-fold VN titer increases. Antibody responses to 2 murine lung protective epitopes were also highly boosted after vaccination. Therefore, BBG2Na is safe, well tolerated, and highly immunogenic in RSV-seropositive adults.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Antibodies, Viral / biosynthesis
  • Antigens, Viral / adverse effects
  • Antigens, Viral / immunology
  • Epitopes / immunology
  • Humans
  • Middle Aged
  • Peptides / immunology
  • Recombinant Proteins / adverse effects
  • Recombinant Proteins / immunology
  • Respiratory Syncytial Virus Infections / etiology
  • Respiratory Syncytial Virus Vaccines / adverse effects*
  • Respiratory Syncytial Virus Vaccines / immunology*
  • Respiratory Tract Infections / etiology
  • Vaccines, Subunit / adverse effects
  • Vaccines, Subunit / immunology
  • Viral Proteins / adverse effects
  • Viral Proteins / immunology

Substances

  • Antibodies, Viral
  • Antigens, Viral
  • Epitopes
  • Peptides
  • Recombinant Proteins
  • Respiratory Syncytial Virus Vaccines
  • Vaccines, Subunit
  • Viral Proteins