Safety and Immunogenicity of Fluzone® Quadrivalent Vaccine Administered to Healthy Children

Inclusion Criteria: * Aged 6 to \< 36 months of age on the day of first study vaccination (study product administration). * Born at full term of pregnancy (≥37 weeks) and/or with a birth weight ≥2.5 kg. Note: This inclusion criterion only applies to participants 6 to \<12 months of age on the day of the first study visit. * Informed consent form has been signed and dated by the parent(s) or guardian(s). * Participant and parent/guardian are able to attend all scheduled visits and to comply with all trial procedures. Exclusion Criteria: * Participation at the time of study enrollment (or in the 30 days preceding the first trial vaccination) or planned participation during the present trial period in another clinical trial investigating a vaccine, drug, medical device, or medical procedure. * Receipt of any vaccine in the 30 days preceding the first trial vaccination, or planned receipt of any vaccine before Visit 2 for participants receiving 1 dose of influenza vaccine or Visit 3 for participants receiving 2 doses of influenza vaccine. * Previous vaccination against influenza (in the 2016-2017 season) with either the trial vaccine or another vaccine. * Receipt of immune globulins, blood, or blood-derived products in the past 3 months. * Known or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the preceding 6 months; or long-term systemic corticosteroid therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months). * Known systemic hypersensitivity to any of the vaccine components, or history of a life-threatening reaction to the vaccine used in the trial or to a vaccine containing any of the same substances. * Thrombocytopenia, which may be a contraindication for intramuscular vaccination, at the discretion of the Investigator. * Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating intramuscular vaccination. * Deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized involuntarily. * 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 acute illness/infection (according to Investigator judgment) on the day of planned vaccination or febrile illness (temperature ≥100.4 degrees Fahrenheit \[38.0 degrees Celsius\]). A prospective participant should not be included in the study until the condition has resolved or the febrile event has subsided. * Identified as a natural or adopted child of either the Investigator or an employee with direct involvement in the proposed study. * History of serious adverse reactions to any influenza vaccine. * Personal history of Guillain-Barré syndrome. * Any condition that in the opinion of the Investigator would pose a health risk to the participant if enrolled or could interfere with the evaluation of the vaccine. * Personal history of clinically significant developmental delay (at the discretion of the Investigator), neurologic disorder, or seizure disorder. * Known seropositivity for human immunodeficiency virus, hepatitis B, or hepatitis C.