431 dengue cases were reported in the week ending 17 Feb 2024, 84 cases fewer than in the previous week. 104 active dengue clusters, of which 27 were with red colour alert (i.e. cluster with 10 or more cases), were reported as of 19 Feb 2024. Fast rate of dengue transmission has been observed at the 295-case Boon Lay Place cluster, 168-case Pasir Ris Street 52/Street 53 cluster, 155-case Ang Mo Kio Avenue 1 cluster, 124-case Bukit Batok Street 21 cluster, 101-case Jalan Semerbak/Jalan Taman cluster, 63-case Elias Road cluster, 62-case Marsiling Drive cluster, and 37-case Ang Mo Kio Avenue 3 cluster. Persistent dengue transmission has been noted at the 148-case Pasir Ris Street 71 cluster, 64-case Pasir Ris Drive 10 cluster, and 59-case Elias Green cluster.
The weekly number of reported dengue cases remains high and is more than double the number of cases reported in Dec 2023. Collective community action and vigilance are critical to help prevent a surge in dengue cases. NEA urges residents living in dengue cluster areas to take immediate action to suppress the Aedes mosquito population and help break disease transmission, and to cooperate with NEA officers during our inspection rounds.
There are four Dengue virus serotypes circulating in Singapore. Currently, Dengue virus serotype 2 (DENV-2) has been predominant since Sep 2023, with prior periodic dominance of DENV-1 and DENV-3 in 2023. Our population’s immunity to all four Dengue virus serotypes remains low.
Everyone should use insect repellent and carry out other ‘S-A-W’ actions, to protect themselves from being bitten by the Aedes mosquito. Individuals diagnosed with or suspected to be infected with dengue are also advised to avoid further mosquito bites, by using insect repellent and carrying out S-A-W actions, to prevent passing on the Dengue virus to mosquitoes and other people in their neighbourhoods.
Spray insecticide in dark corners around the house
Apply insect repellent regularly
Wear long-sleeve tops and long pants
Repellents containing DEET (N,N-diethyl-m-toluamide), picaridin or IR3535 as the active ingredient, are the most effective in repelling mosquitoes. For more information, please refer to the ‘Guidelines on the use of Mosquito Repellent Spray’.
Three Zika cases have been reported in 2024 to date. Last year, 30 Zika cases were reported, of which 15 cases were notified at the Zika cluster at Highland Walk / Kovan Rd / Kovan Rd (The Bently Residences@Kovan) / Upp Serangoon Rd, which is now closed. Nonetheless, residents, especially pregnant women, are advised to take measures to prevent mosquito bites, monitor their health, and seek medical attention if unwell. There are currently no Zika clusters.
Similar to the dengue virus, the Zika virus is transmitted primarily by the Aedes mosquito. With presence of the Aedes mosquito vector in Singapore, everyone is urged to maintain vigilance and play his part to prevent further localised disease transmission, through regularly practising the following Mozzie Wipeout ‘B-L-O-C-K’ steps:
Break up hardened soil
Lift and empty flowerpot plates
Overturn pails and wipe their rims
Change water in vases
Keep roof gutters clear and place BTI insecticide inside
Source eradication of mosquito breeding habitats and spraying of insecticide to control the adult mosquito population remain key to dengue and Zika prevention and control. All stakeholders and the community are urged to take immediate action to remove stagnant water from our environment and maintain good housekeeping, to deprive mosquitoes of potential breeding habitats. Residents are urged to allow NEA officers to inspect their premises and conduct spraying of insecticide, to enable immediate removal of adult mosquitoes to stop dengue and Zika transmission.
Persons showing symptoms suggestive of dengue or Zika infections should see a medical practitioner early, to be diagnosed and managed accordingly. Early diagnosis can facilitate better case management. Thosewith dengue or Zika infection should apply mosquito repellent regularly, so that mosquitoes do not bite and pick up the virus from them before biting someone else, thus reducing further disease transmission.
Symptoms suggestive of dengue infection include:
- Sudden onset of fever for two to seven days;
- Severe headache with retro-orbital (behind the eye) pain;
- Joint and muscle pain;
- Skin rashes;
- Nausea and vomiting;
- Bleeding from the nose or gums;
- Easy bruising of the skin.
Symptoms suggestive of Zika infection include:
- Joint pain;
- Muscle pain;
- Conjunctivitis (red eyes),
Although rare, Zika virus infection can cause microcephaly in unborn babies of pregnant women
Please visit the Ministry of Health’s website for more information on Dengue and Zika.
The latest updates can also be found on the NEA website, and myENV app.