This is a randomized, double-blind, phase 3 study to evaluate the Efficacy,Safety, and Immunogenicity of ROTAVAC 5D, a live attenuated rotavirus vaccine in healthy infants aged 6-8 weeks. A total of 5800 healthy Chilean infants will be recruited in this study and randomized to receive either vaccine or placebo in 1:1 ratio. Among these participants 300 will be categorized to immunogenicity cohort, 150 from each group, and blood samples will be collected to assess the immune response.
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To evaluate the efficacy of ROTAVAC5D
Timeframe: 14 days following the 3rd dose till the age of 1 year (12 months) + up to 14 days].