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Dengue Prevention
What you need to know…
What is dengue fever?
Dengue fever is a virus infection caused by the dengue
     virus. There are 4 kinds of dengue viruses.




               Close-up of an Aedes mosquito
Aedes mosquito




Aedes Aegypti    Aedes Albopictus
Symptoms of Dengue Fever




Example of a skin rash
 due to dengue fever
Do you know…
•Dengue fever and dengue haemorrhagic fever are the
most common mosquito-borne viral disease in the world.

•Only the female mosquito feeds on blood. This is
because they need the protein found in blood to produce
eggs. Male mosquitoes feed only on plant nectar.

•The mosquito is attracted by the body odours, carbon
dioxide and heat emitted from the animal or humans.

•The female Aedes mosquito searches for suitable places to
lay their eggs.

•Aedes are day-biters, most active during dawn and
dusk.
Life cycle of the Aedes mosquito


1-2 days




   Pupae                  Larvae                  Eggs


           4-5 days                    2-3 days




                      Stagnant water
How Do Aedes mosquitoes Transmit
          Diseases...
             Mozzie bites an
             infected person




Healthy                        Infected
person                         mozzie bites
comes down                     a healthy
with                           person
dengue
fever
This is what you
can do to help…
Prevent Mosquitoes from Breeding!


     Remove ALL sources of stagnant water.

    Deny the Aedes mosquito of any chance to
                    breed.
Potential Breeding Grounds
Common Mosquito Breeding Grounds
 Artificial containers (man-made)        Natural containers

1. Flower vases and pot plates
                                       1. Tree Holes, bamboo
2. Pails, water-storage jars, basins      stumps
3. Discarded receptacles               2. Leaf axils, fallen leaves
4. Choked roof gutters                 3. Ground Depressions
5. Gully Traps
6. Unused toilet bowls and cisterns
7. Aircon Tray and dish rack tray
8. Concrete drains


                 All these sites require constant
                           inspection !!
Potential Breeding Grounds




  Flower Pots
                 Flower Pot Plates
Potential Breeding Grounds




Overflow cistern of the WC   Gully Trap
Potential Breeding Grounds




       Collar of the toilet bowl
Potential Breeding Grounds




Hardened soil of potted   Tree holes
       plants
Potential Breeding Grounds




         Plant axils
Potential Breeding Grounds




Scupper drains   Bamboo pole holders
Potential Breeding Grounds




                  Barbeque pit
Road side drain
Potential Breeding Grounds




          Canvas sheets
Potential Breeding Grounds




       Discarded receptacles
Potential Breeding Grounds




          Air-con tray
Potential Breeding Grounds




     Roof gutters   Litter Bins
The 10-Minute
Mozzie Wipe-Out
    Exercise
5 Easy Steps
1.
                 •Change water in
                vases/ bowls every
                    other day.


               •Add sand granular
             insecticide* to water.

          *You can view the list of retailers carrying sand
          granular insecticide at the following webpage:
          http://www.nea.gov.sg/aedes/insecticides
5 Easy Steps
2.
             •Remove water from
           flower pot plates every
                 other day.
5 Easy Steps
3.
           •Turn over all storage
                containers
5 Easy Steps
4.
           •Inform your parents
            or any adults in your
             household to cover
            bamboo pole holders
              when not in use.
5 Easy Steps
5.
             •Clear blockages and
             put Bti insecticide in
             roof gutters at least
                 once a month
What Else Can You Do…
            Check your landscape
          structures for any water
            retention & mosquito
         breeding regularly. Remove
             these structures if
                  possible.

         Add in prescribed amounts
              of sand granular
          insecticides to stagnant
                   water.
Use of the Anti-mosquito valve
If you are going on
holiday or vacating
    your home…
If going on holiday..




•Seal off all floor and   •Cover all toilet bowls
      gully traps
If going on holiday..

   Leave your contact
    number with your
  neighbor so that the
  NEA can contact you
 should there be a need
to inspect your premises
        urgently.
Spread the dengue prevention
    message to others…


                  Let your family,
                    friends and
                  neighbours know
                 about the dangers
                    of breeding
                     mosquitoes
How to Prevent Mosquitoes Bites

   Wear shoes, socks, long pants and long-sleeved
   shirt
   Use mosquito repellents
   Mosquito coils
   Mosquito nets
For more information,
  you can visit the
     website at
 www.dengue.gov.sg

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Dengue guidelines

  • 1. Dengue Prevention What you need to know…
  • 2. What is dengue fever? Dengue fever is a virus infection caused by the dengue virus. There are 4 kinds of dengue viruses. Close-up of an Aedes mosquito
  • 3. Aedes mosquito Aedes Aegypti Aedes Albopictus
  • 4. Symptoms of Dengue Fever Example of a skin rash due to dengue fever
  • 5. Do you know… •Dengue fever and dengue haemorrhagic fever are the most common mosquito-borne viral disease in the world. •Only the female mosquito feeds on blood. This is because they need the protein found in blood to produce eggs. Male mosquitoes feed only on plant nectar. •The mosquito is attracted by the body odours, carbon dioxide and heat emitted from the animal or humans. •The female Aedes mosquito searches for suitable places to lay their eggs. •Aedes are day-biters, most active during dawn and dusk.
  • 6. Life cycle of the Aedes mosquito 1-2 days Pupae Larvae Eggs 4-5 days 2-3 days Stagnant water
  • 7. How Do Aedes mosquitoes Transmit Diseases... Mozzie bites an infected person Healthy Infected person mozzie bites comes down a healthy with person dengue fever
  • 8. This is what you can do to help…
  • 9. Prevent Mosquitoes from Breeding! Remove ALL sources of stagnant water. Deny the Aedes mosquito of any chance to breed.
  • 11. Common Mosquito Breeding Grounds Artificial containers (man-made) Natural containers 1. Flower vases and pot plates 1. Tree Holes, bamboo 2. Pails, water-storage jars, basins stumps 3. Discarded receptacles 2. Leaf axils, fallen leaves 4. Choked roof gutters 3. Ground Depressions 5. Gully Traps 6. Unused toilet bowls and cisterns 7. Aircon Tray and dish rack tray 8. Concrete drains All these sites require constant inspection !!
  • 12. Potential Breeding Grounds Flower Pots Flower Pot Plates
  • 13. Potential Breeding Grounds Overflow cistern of the WC Gully Trap
  • 14. Potential Breeding Grounds Collar of the toilet bowl
  • 15. Potential Breeding Grounds Hardened soil of potted Tree holes plants
  • 17. Potential Breeding Grounds Scupper drains Bamboo pole holders
  • 18. Potential Breeding Grounds Barbeque pit Road side drain
  • 19. Potential Breeding Grounds Canvas sheets
  • 20. Potential Breeding Grounds Discarded receptacles
  • 22. Potential Breeding Grounds Roof gutters Litter Bins
  • 24. 5 Easy Steps 1. •Change water in vases/ bowls every other day. •Add sand granular insecticide* to water. *You can view the list of retailers carrying sand granular insecticide at the following webpage: http://www.nea.gov.sg/aedes/insecticides
  • 25. 5 Easy Steps 2. •Remove water from flower pot plates every other day.
  • 26. 5 Easy Steps 3. •Turn over all storage containers
  • 27. 5 Easy Steps 4. •Inform your parents or any adults in your household to cover bamboo pole holders when not in use.
  • 28. 5 Easy Steps 5. •Clear blockages and put Bti insecticide in roof gutters at least once a month
  • 29. What Else Can You Do… Check your landscape structures for any water retention & mosquito breeding regularly. Remove these structures if possible. Add in prescribed amounts of sand granular insecticides to stagnant water.
  • 30. Use of the Anti-mosquito valve
  • 31. If you are going on holiday or vacating your home…
  • 32. If going on holiday.. •Seal off all floor and •Cover all toilet bowls gully traps
  • 33. If going on holiday.. Leave your contact number with your neighbor so that the NEA can contact you should there be a need to inspect your premises urgently.
  • 34. Spread the dengue prevention message to others… Let your family, friends and neighbours know about the dangers of breeding mosquitoes
  • 35. How to Prevent Mosquitoes Bites Wear shoes, socks, long pants and long-sleeved shirt Use mosquito repellents Mosquito coils Mosquito nets
  • 36. For more information, you can visit the website at www.dengue.gov.sg