title: Meningococcal tetravalent conjugate vaccine.
abstract: BACKGROUND
  Neisseria meningitidis is a leading cause of meningitis and sepsis worldwide. Since 1981, a tetravalent meningococcal polysaccharide vaccine has been available in the US but it has been limited to high-risk patients and outbreak settings. In 2005, a tetravalent polysaccharide meningococcal conjugate vaccine (MCV4) was licensed for routine use in the US.
  
  
  OBJECTIVE
  To assess the immunogenicity and safety of MCV4, and to extrapolate the anticipated clinical effectiveness of MCV4 using data from other polysaccharide conjugate vaccination programs.
  
  
  METHODS
  All published controlled studies of MCV4 immunogenicity, safety and cost-effectiveness are analyzed. Publicly-available clinical trial data and the Advisory Committee on Immunization Practices guidelines were also reviewed.
  
  
  CONCLUSIONS
  MCV4 is as safe and immunogenic as the previously available polysaccharide vaccine, and seems to provide longer lasting protection against meningococcal disease. Long-term studies are continuing and will shed further light on the effectiveness of MCV4 at the population level.
authors.affiliation: University of Louisville School of Medicine, Division of Pediatric Infectious Diseases, 571 S Floyd Street, Suite 321, Louisville, KY 40202, USA. mjsmit22@louisville.edu
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Smith
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D020275:Guillain-Barre Syndrome / Q000209:etiology; D006801:Humans; D022401:Meningococcal Vaccines / Q000009:adverse effects / Q000276:immunology / Q000627:therapeutic use*; D011358:Product Surveillance, Postmarketing
chemical_list: D022401:Meningococcal Vaccines