Immunogenicity and Safety of Two-Dose Series of Menactra® in Japanese Healthy Adult Subjects

Inclusion Criteria: * Aged 20 through 55 years on the day of inclusion, * Informed consent form had been signed and dated by the participant, * Able to attend all scheduled visits and to comply with all trial procedures, * For female participants who had childbearing potential, use of an effective method of contraception from at least 4 weeks prior to vaccination until at least 4 weeks after vaccination * a) "20 through 55 years" meant from the day of the 20th birthday to the day before the 56th birthday. * b) To be considered to be not of childbearing potential, a woman must either had undergone surgical sterilization (hysterectomy or bilateral tubal ligation) or be postmenopausal (at least one year without menses) at the time of vaccination. Effective methods of contraception include oral contraception (pill), intrauterine device, diaphragm or condoms used with sponge, contraceptive foam or cream, hormonal implants, transdermal patch, or parenteral contraception. Exclusion Criteria: * Chronic illness that, in the opinion of the investigator, was at a stage where it might interfere with trial conduct or completion, * History of meningococcal diseases, confirmed either clinically, serologically, or microbiologically, * Known systemic hypersensitivity to any of the vaccine components, or history of a life threatening reaction to a vaccine containing the same substances of the study vaccine, * Known or suspected congenital or current/ previous acquired immunodeficiency; or r…