There will be no dengue vaccines until it is proven that it protects the population from dengue

If a person between the ages of 12 and 45 can show proof of a prior dengue infection OR by serological testing, they can receive the vaccination (Dengue IgG). This warning came as a result of Sanofi warning that giving children Dengvaxia could result in serious sickness in those who had never had dengue vaccines. A similar warning has been released by Singapore's Health Science Authority (HSA).

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https://thriveblogs.weebly.com/article/dengue-vaccines-are-the-only-way-to-prevent-the-rising-incidence-of-dengue-infection-becoming-a-major-problem-in-emerging-countries