A Study on the Safety, Tolerability and Immune Response of Meningococcal Combined ABCWY Vaccine in Healthy Infants

Inclusion Criteria: * Participants' parent(s)/Legally Acceptable Representative(s) \[LAR(s)\] who, in the opinion of the investigator, can and will comply, with the requirements of the protocol. * Written or witnessed/thumb printed informed consent obtained from the parent(s)/LAR(s) of the participant prior to performance of any study specific procedure. * Healthy participants as established by medical history and clinical examination before entering into the study. * A male or female between, and including, 55 and 89 days of age (approximately 2 MoA) at the time of the first study vaccination. * Born after a gestation period of ≥37 weeks, with a birth weight ≥2.5 kg. Exclusion Criteria: Medical conditions * Current or previous, confirmed or suspected disease caused by N. meningitidis. * Household contact with and/or intimate exposure to an individual with laboratory confirmed N. meningitidis infection from birth. * Progressive, unstable or uncontrolled clinical conditions. * Clinical conditions representing a contraindication to intramuscular vaccination and blood draws. * Any neuroinflammatory disorders, congenital and peripartum neurological conditions, encephalopathies, seizures. * Congenital or peripartum disorders resulting in a chronic condition * Major congenital defects, as assessed by the investigator. * History of any reaction or hypersensitivity likely to be exacerbated by any component of the vaccine(s)/product(s). * Hypersensitivity, including allergy, to an…