What is dengue?

Dengue fever is a viral disease spread by mosquitoes. Four closely related viruses cause dengue. It is the fastest-growing mosquito-borne viral infection in the world.

Symptoms of the disease include fever, headache, pain behind the eyes, muscle and joint pain, and rash.

Around 2.5% of people affected by severe dengue die from the disease. There is no cure for infection.

Dengue fever can, in some cases, be life-threatening. Severe dengue causes abdominal pain and vomiting, breathing difficulties and a decrease in blood platelets that can lead to internal bleeding.

Where is dengue most common?

Earth globe with greatest dengue spots.

Dengue is present in over 150 countries – more than 40% of the world’s population live in at-risk areas. While most reported cases are in Latin America, Southeast Asia, and the Western Pacific, dengue also is present in many African countries. The disease is spreading to parts of Europe, the USA and China.

Who is affected and who is most at risk?

The World Health Organization (WHO) estimates that about 40% of the world’s population is at risk of being infected with dengue. All age groups are at risk.

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