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Dengue fever is a disease transmitted by the bite of the Aedes mosquito carrying one of the 4 dengue viruses. Each year, 390 million people are infected, of which 96 million people show clinical symptoms 1.

Global dengue burden: 3.9 billion people are at risk in over 129 countries
 Video virus - Dengue

Dengue virus infection

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There has been an over 8-fold increase in the number of dengue  cases reported to WHO since the turn of the century - People can get ill  up to 4 times in a lifetime  with dengue
Symptoms and treatment - Dengue

Vaccination against Dengue

In 2015, Sanofi Pasteur introduced the first dengue vaccine which is registered in several of the most endemic countries in the world. Implementation of public dengue vaccination programs should be consistent with current approved labelling for the first available dengue vaccine in each country where it is approved, as well as by updated WHO position for the vaccine as part of integrated dengue prevention efforts that include vector control, disease management and surveillance.


  1. WHO. Dengue and severe dengue Fact Sheet. Available at: https://www.who.int/news-room/fact-sheets/detail/dengue-and-severe-dengue. Reviewed May 2021. Last access: December 2021.