[Translation] A randomized, blinded, positive-controlled phase III clinical trial to evaluate the safety and immunogenicity of quadrivalent influenza virus subunit vaccine in healthy people aged 6-35 months
主要目的:评价0.5ml/支四价流感病毒亚单位疫苗在6-35月龄健康人群中接种后的安全性和免疫原性。次要目的:评价0.25ml/支四价流感病毒亚单位疫苗在6-35月龄健康人群中接种后的安全性和免疫原性。探索性目的:1.比较 0.5ml/支与 0.25ml/支四价流感病毒亚单位疫苗在 6-35 月龄健康人群中接种后的安全性和免疫原性的差异;2.探索 0.5ml/支与 0.25ml/支四价流感病毒亚单位疫苗在 6-35 月龄健康人群中全程接种后的 3 个月和 6 个月免疫持久性。
[Translation] Primary objective: To evaluate the safety and immunogenicity of 0.5ml/dose quadrivalent influenza virus subunit vaccine in healthy people aged 6-35 months. Secondary objective: To evaluate the safety and immunogenicity of 0.25ml/dose quadrivalent influenza virus subunit vaccine in healthy people aged 6-35 months. Exploratory objectives: 1. To compare the differences in safety and immunogenicity between 0.5ml/dose and 0.25ml/dose quadrivalent influenza virus subunit vaccine in healthy people aged 6-35 months; 2. To explore the immune persistence of 0.5ml/dose and 0.25ml/dose quadrivalent influenza virus subunit vaccine in healthy people aged 6-35 months at 3 months and 6 months after full vaccination.