Dengue Fever

Dengue Fever





  • Dengue is a mosquito-borne viral infection.
  • The infection causes flu-like illness, and occasionally develops into a potentially lethal complication called severe dengue.
  • Dengue virus is transmitted by female mosquitoes mainly of the species Aedes aegypti and, to a lesser extent, Ae. albopictus. 
  • The global incidence of dengue has grown dramatically in recent decades. About half of the world's population is now at risk.



  • Dengue is found in tropical and sub-tropical climates worldwide, mostly in urban and semi-urban areas.
  • Severe dengue is a leading cause of serious illness and death among children in some Asian and Latin American countries.
  • There is no specific treatment for dengue/ severe dengue, but early detection and access to proper medical care lowers fatality rates below 1%.
  • Dengue prevention and control depends on effective vector control measures.


Prevention and control

At present, the main method to control or prevent the transmission of dengue virus is to combat vector mosquitoes through:

  • preventing mosquitoes from accessing egg-laying habitats by environmental management and modification;
  • disposing of solid waste properly and removing artificial man-made habitats;
  • covering, emptying and cleaning of domestic water storage containers on a weekly basis;
  • applying appropriate insecticides to water storage outdoor containers;
  • using of personal household protection such as window screens, long-sleeved clothes, insecticide treated materials, coils and vaporizers;
  • improving community participation and mobilization for sustained vector control;
  • applying insecticides as space spraying during outbreaks as one of the emergency vector-control measures;
  • active monitoring and surveillance of vectors should be carried out to determine effectiveness of control interventions.








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