Immunogenicity and Safety of an Investigational Quadrivalent Meningococcal Conjugate Vaccine in Adults 56 Years and Older

Participants were randomized in a 1:1 ratio to receive a single dose of MenACYW conjugate vaccine or Menomune® - A/C/Y/W-135 on Day 0 (Visit 1). Participants underwent immunogenicity assessment at baseline (pre-vaccination) and at 30 to 44 days post-vaccination and were also evaluated for safety up to Day 180 post-vaccination.