Influenza Clinical Trial
Official title:
A Randomized, Double-blind, Controlled Phase I Clinical Trial to Evaluate the Safety and Immunogenicity of the Quadrivalent Influenza Virus Split Vaccine (MDCK Cells) for Individuals Aged 6 Months and Above.
To evaluate the safety of administering 1 or 2 doses of the quadrivalent influenza virus split vaccine (MDCK cells) (0.5ml/dose) in individuals aged 6 months and above.
This is a single center, randomized, double-blind, controlled phase I clinical trial. Plan to include 300 participants aged 6 months and above. The experiment was divided into 5 age groups, with 60 cases each aged 6-35 months, 3-8 years, 9-17 years, 18-59 years, and ≥ 60 years old. Each age group was randomly assigned to the experimental group, control group, or placebo group in a 1:1:1 ratio. Among them, the participants aged 6 to 35 months and 3 to 8 years old will receive 2 doses throughout the entire process, with an interval of 28 days between each dose. Participants aged 9-17, 18-59, and ≥ 60 years old are vaccinated with one dose throughout the entire process. ;
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