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The World Health Organization report that the global incidence of dengue has grown dramatically in recent decades with about half of the world's population now at risk.
So far in 2021, there have been 1,472,059 cases reported worldwide, with the majority from Brazil, India, Vietnam, the Philippines and Peru.
Dengue is an infection found in tropical and sub-tropical climates worldwide, with a small number of cases in southern Europe in recent years. It is spread by Aedes mosquito bites and can cause a severe flu-like illness.
There is no vaccine against dengue licensed in the UK. Treatment is supportive only.
All travellers to endemic regions are potentially at risk of dengue fever and should be aware of this infection.
Aedes mosquitoes are particularly persistent and aggressive. They bite between dawn and dusk.
Travellers developing a fever during or on return from travel are advised to seek medical attention as soon as possible.
For further information see TRAVAX dengue fever page.
