Dengue guidelines

Dengue PreventionWhat 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

Stagnant waterStagnant water

EggsLarvaePupae

4-5 days 2-3 days

How Do Aedes mosquitoes Transmit Diseases...

Mozzie bites an infected person

Infected mozzie bites a healthy person

Healthy person comes down with 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 GroundsPotential Breeding Grounds

Common Mosquito Breeding GroundsArtificial containers (man-made) Natural containers

1. Flower vases and pot plates

2. Pails, water-storage jars, basins

3. Discarded receptacles

4. Choked roof gutters

5. Gully Traps

6. Unused toilet bowls and cisterns

7. Aircon Tray and dish rack tray

8. Concrete drains

1. Tree Holes, bamboo stumps

2. Leaf axils, fallen leaves

3. Ground Depressions

All these sites require constant inspection !!


Flower Pots Flower Pot Plates


Overflow cistern of the WC Gully Trap


Collar of the toilet bowl


Hardened soil of potted plants

Tree holes


Plant axils


Scupper drains Bamboo pole holders


Barbeque pitRoad side drain


Canvas sheets


Discarded receptacles


Air-con tray


Roof gutters Litter Bins

The 10-Minute Mozzie Wipe-Out

Exercise

5 Easy Steps

•Change water in vases/ bowls every

other day.

•Add sand granular insecticide* to water.

1.1.

*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

•Remove water from flower pot plates every

other day.

2.2.

5 Easy Steps

•Turn over all storage containers

3.3.

5 Easy Steps

•Inform your parents or any adults in your household to cover

bamboo pole holders when not in use.

4.4.

5 Easy Steps

•Clear blockages and put Bti insecticide in roof gutters at least

once a month

5.5.

What Else Can You DoWhat 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 gully traps

•Cover all toilet bowls

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

Documents

Dengue guidelines