Study of a Quadrivalent Meningococcal Conjugate Vaccine as a Single Dose Compared With a Single Dose of a Meningococcal Reference Vaccine in Children, Adolescents, and Adults 2 to 55 Years of Age

Inclusion criteria : * Aged 2 to 55 years on the day of inclusion. * Informed consent form had been signed and dated by the participants or participants' parents/legally acceptable representatives as applicable. In addition: Participants 7 to 19 years provided written assent. * Participants (and participants' parents/legally acceptable representatives for the 2 to 19 years age groups) were able to attend all scheduled visits and complied with all study procedures. Exclusion criteria: * Participant was pregnant, or lactating, or of childbearing potential (to be considered of non-childbearing potential, a female must be pre-menarche or post-menopausal for at least 1 year, surgically sterile, or using an effective method of contraception\* or abstinence from at least 4 weeks prior to vaccination until at least 4 weeks after vaccination). \*Effective methods of contraception included oral contraception (pill), intrauterine device, or condoms used with spermicide. * Participation in the 4 weeks preceding the study vaccination or planned participation during the present study period in another clinical study investigating a vaccine, drug, medical device, or medical procedure. * Receipt of any vaccine in the 4 weeks preceding the study vaccination or planned receipt of any vaccine prior to Visit 2 except for influenza vaccination, which may be received at least 2 weeks before or after the study investigational vaccines. This exception includes monovalent pandemic influenza vac…