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Vector Control Module 1C

Vector Control Module 1C. Dengue. Dengue. Blood borne viral disease spread by the bite of aedis aegypti mosquito 2 forms: Dengue fever + Dengue Hemorrhagic Fever Up to 40% fatality in epidemics No drugs or vaccines that work!. Aedes : The efficient vector.

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Vector Control Module 1C

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  1. Vector ControlModule 1C Dengue

  2. Dengue • Blood borne viral disease spread by the bite of aedis aegypti mosquito • 2 forms: Dengue fever + Dengue Hemorrhagic Fever • Up to 40% fatality in epidemics • No drugs or vaccines that work!

  3. Aedes: The efficient vector Often bites several people for one blood meal. Feeds preferentially on human blood Transmitted by infected female mosquito Thrives in close proximity to humans Found mainly in urban and semi urban areas Short flight range of about 200 meters Lays eggs in artificial water containers

  4. Behaviour of mosquitoes

  5. Dengue

  6. Breeding Sites

  7. Emerging global threat 2003: 20 mega cities of > 10 mil. people; 75%developing world

  8. Burden of Dengue/Dengue haemorrhagic fever world-wide reported to WHO

  9. Case study exercise Dengue, Burma • Look at material • Answer questions • Feedback and discussion

  10. Dengue, Burma

  11. Increased risk in Burma following Cyclone Nargis because of; • Overcrowded conditions • Fresh water was stored in unprotected containers • Debris permits water collection and forms breeding sites • Rural populations displaced to urban settings have lower herd immunity

  12. Control • Outdoor space spraying • Larvicide

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