Following news that Singapore is at risk of a surge in dengue cases, CNA looks at what causes an outbreak to happen and why certain areas are more susceptible to dengue.
In its news release on Wednesday, NEA highlighted “large and persistent” dengue clusters in several areas.
A 44-case dengue cluster at Science Park Drive and 28-case cluster at Lentor Loop were also highlighted, which have a fast rate of dengue transmission, according to NEA.This is not the first time Toa Payoh has been affected by dengue.
Building features that facilitate mosquito breeding and lack of breeding habitat surveillance could be part of the reason for any location having sustained transmission, noted Dr Dickens. Dr Dickens added that the reasons behind why the outbreaks occur are “complex”. It is a mixture of environmental factors such as weather, serotyping and the management of our urban spaces, the assistant professor noted.
Continued releases lead to a decline in the urban Aedes aegypti mosquito population, and therefore less dengue transmission, according to NEA. Female mosquitoes attempting to lay their eggs in these containers will be captured and prevented from subsequently biting other people. The Gravitrap also traps and prevents the emergence of any mosquitoes from eggs that are laid in the trap.
To avoid a surge in dengue cases, NEA said members of the public can remove stagnant water and carry out the"S-A-W" steps: Spray insecticide in dark corners around the house, apply insect repellent regularly and wear long-sleeve tops and long pants.
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