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Prevention & Control of Dengue Fever

by Public Health Update

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Prevention & Control of Dengue Fever


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    • 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.

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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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