What is Dengue fever?
Dengue fever also known as break bone fever, is an infectious tropical disease caused by the dengue virus. Symptoms include fever, headache, muscle and joint pains, and a characteristic skin rash that is similar to measles. In a small proportion of cases the disease develops into the life-threatening dengue haemorrhagic fever, resulting in bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs.
Dengue is transmitted by several species of mosquito within the genus Aedes, principally A. aegypti. The virus has four different types; infection with one type usually gives lifelong immunity to that type, but only short-term immunity to the others. Subsequent infection with a different type increases the risk of severe complications. As there is no commercially available vaccine, prevention is sought by reducing the habitat and the number of mosquitoes and limiting exposure to bites.
Symptoms and signs.
Symptoms include fever, headache, muscle and joint pains, and a characteristic skin rash that is similar to measles.
Dengue Prevention Checklist
To prevent the spread of dengue fever, you must first prevent the breeding of its vector, the Aedes mosquito. The Aedes mosquito is easily identifiable by its distinctive black and white stripes on their body. It prefers to breed in clean, stagnant water easily found in our homes. You can get rid of the Aedes mosquito by frequently checking and removing stagnant water in your premises.
The guidelines below will give you an overview of how you can prevent the Aedes mosquito from breeding.
At all times
v Turn pails and watering cans over and store them under shelter.
v Remove water in plant pot plates. Clean and scrub the plate thoroughly to remove mosquito eggs. Avoid the use of plant pot plates, if possible.
v Loosen soil from potted plants to prevent the accumulation of stagnant water on the surface of the hardened soil.
v Do not block the flow of water in scupper drains along common corridors in HDB estates. Avoid placing potted plants and other paraphernalia over the scupper drains.
v Cover rarely used gully traps. Replace the gully trap with non-perforated ones and install anti-mosquito valves.
v Cover bamboo pole holders after use. Rainwater can potentially accumulate in these bamboo pole holders if they are uncovered and create a habitat.
v No tray or receptacles should be placed beneath and or/ on top of any air-conditioning unit so as not to create a condition favourable for mosquito breeding.
Every other day
v Change water in flower vases. Clean and scrub the inner sides of vases. Wash roots of flowers and plants thoroughly as mosquito eggs can stick to them easily.
Once a week
v Clear fallen leaves and stagnant water in your scupper drains and garden. These leaves could collect water or cause blockages to the drains, thus resulting in the build-up of stagnant water.
v Clear any stagnant water in your air cooler unit.
Once a month
v Add prescribed amounts of sand granular insecticide into vases, gully traps and roof gutters, even if they are dry.
v Clear away fallen leaves in roof gutters and apron drains. If structurally feasible, remove the roof gutters.