The aim of the trial was to evaluate the use of a tetravalent vaccine, CYD dengue vaccine, against dengue disease. Primary Objectives: * To describe the humoral immune response to dengue before and after each vaccination with dengue vaccine in two age cohorts of children (6 to 11 years and 2 to 5 years) previously vaccinated with yellow fever (YF) vaccine. * To evaluate the safety of each vaccination with dengue vaccine in two age cohorts of children (6 to 11 years and 2 to 5 years). * To describe viremia after the first and second vaccinations with dengue vaccine in a subgroup of 130 randomized participants (100 participants in Dengue Vaccine Group and 30 participants in Control Group) in two age cohorts of children (6 to 11 years and 2 to 5 years).
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Percentage of Participants (Aged 2 to 11 Years) Reporting Solicited Injection-site and Systemic Reactions Following Each Injection (Inj.) With CYD Dengue Vaccine or Placebo
Timeframe: Day 0 (Post-Injection) up to Day 14 after injection 1, 2 and 3
Percentage of Participants (Aged 2 to 5 Years) Reporting Solicited Injection-site and Systemic Reactions Following Each Injection With CYD Dengue Vaccine or Placebo
Timeframe: Day 0 (Post-Injection) up to Day 14 after injection 1, 2 and 3
Percentage of Participants (Aged 6 to 11 Years) Reporting Solicited Injection-site and Systemic Reactions Following Each Injection With CYD Dengue Vaccine or Placebo
Timeframe: Day 0 (Post-Injection) up to Day 14 after injection 1, 2 and 3