Influenza Clinical Trial
Official title:
Safety and Immunogenicity of Fluzone® Quadrivalent Vaccine Administered to Healthy Children 6 to < 36 Months of Age
The aim of the study was to describe the safety and immunogenicity of a 0.5-mL dose (15 μg hemagglutinin [HA] per strain) of Fluzone Quadrivalent vaccine in children 6 to <36 months of age. Primary objective: - To compare the rate of any fever (temperature ≥100.4 degrees Fahrenheit [38.0 degrees Celsius) following a 0.5-mL dose of Fluzone Quadrivalent vaccine to that following a 0.25-mL dose of Fluzone Quadrivalent vaccine during the 7 days after either vaccination (Dose 1 and Dose 2 combined) in participants 6 to < 36 months of age. Secondary objective: - To compare antibody responses induced by a 0.5-mL dose of Fluzone Quadrivalent vaccine to those induced by a 0.25-mL dose of Fluzone Quadrivalent vaccine as assessed by geometric mean titer (GMT) ratios and seroconversion rate differences after the final vaccination in participants 6 to < 36 months of age. Other objectives: - To describe the safety of 2 different dose levels of the 2016-2017 formulation of Fluzone Quadrivalent vaccine in participants 6 to < 36 months of age. - To describe the immunogenicity of 2 different dose levels of the 2016-2017 formulation of Fluzone Quadrivalent vaccine in participants 6 months to < 36 months of age. - To submit available sera from approximately 30 participants to the Center for Biologics Evaluation and Research for further analysis by the World Health Organization, the Centers for Disease Control and Prevention, and the FDA to support formulation recommendations for subsequent influenza vaccines.
All participants received 1 intramuscular dose of Fluzone Quadrivalent vaccine during Visit 1. For participants, for whom 2 doses of influenza vaccine were recommended per Advisory Committee on Immunization Practices (ACIP) guidance, a second dose of Fluzone Quadrivalent vaccine (of the same volume as the first dose) was administered during Visit 2 (28 days after Visit 1). Solicited adverse event (AE) information was collected for 7 days after each vaccination, unsolicited AE information was collected from Visit 1 to Visit 2 or to Visit 3 for participants receiving 2 doses of study vaccine. Serious adverse event (SAE) information was collected for 28 days after each vaccination. Immunogenicity was evaluated in a planned subset of 1600 randomly selected participants prior to vaccination on Day 0 (Visit 1) and at Day 28 after the final vaccination. ;
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