Dengue is a vector-borne disease transmitted by the bite of an infected mosquito. There are 4 serotypes of the virus that cause dengue. These are known as DEN-1, DEN-2, DEN-3 and DEN-4. Most dengue infections are mild and may not get noticed.

Severe dengue is a potentially lethal complication which can develop from dengue infections. You can lower your risk of dengue by avoiding mosquito bites, especially during the day.