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.
Dengue is found in more than 150 countries – more than 40% of the world’s population live in at-risk areas. Most cases are reported in Southeast Asia, Latin America and the Western Pacific, and the disease is also found in many African countries.
Symptoms of the disease include fever, headache, pain behind the eyes, muscle and joint pain, and rash. People infected with dengue often experience long-term disease.
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.
Around 2.5% of people affected by severe dengue die from the disease. There is no cure for infection.