Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered in Healthy Children and Adolescents in China

Inclusion Criteria: * For Cohort I: Aged 7 to 17 years on the day of inclusion ("7 to 17 years" means from the day of the 7th birthday to the day before the 18th birthday.). For Cohort II: Aged 2 to 6 years on the day of inclusion (2 to 6 years" means from the day of the 2nd birthday to the day before the 7th birthday.) * Participants who are healthy as determined by medical evaluation including medical history and physical examination. * A female participant is eligible to participate if she is not pregnant or breastfeeding Exclusion Criteria: Participants are excluded from the study if any of the following criteria apply: * Known or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy; or long-term systemic corticosteroid therapy * History of meningococcal infection * History of any neurologic disorders * History of Guillain-Barré syndrome * History of an Arthus-type hypersensitivity reaction after a previous dose of tetanus toxoid-containing vaccine * At high risk for meningococcal infection during the trial * Known systemic hypersensitivity to any of the vaccine components * Self-reported thrombocytopenia, contraindicating intramuscular vaccination. * Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating intramuscular vaccination. * Chronic illness that, in the opinion of the Investigator, is at a stage where it might interfere with trial conduct or completion. * Moderate or severe acu…