316 dengue cases were reported in the week ending 19 November 2022, 22 cases more than in the previous week. NEA urges continued vigilance by everyone, to continue doing their part to curb dengue transmission by regularly practising the following ‘B-L-O-C-K’ steps:

‘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

As of 21 November 2022, there are 74 active dengue clusters, with 16 dengue clusters with red colour alert (i.e. cluster with 10 or more cases). Dengue virus serotype 3 (DENV-3) has been detected in 13 of the 16 dengue clusters with red colour alert. In Oct 2022, the Aedes aegypti mosquito population (the primary dengue vector) remained high in Singapore, and was about 26 per cent higher than in the same period last year (Oct 2021). The high Aedes aegypti mosquito population, together with circulation of the previously uncommon DENV-3 serotype, requires all stakeholders and the community to continue taking urgent action to remove stagnant water from our environment and maintain good housekeeping, to deprive mosquitoes of potential breeding habitats.

NEA is continuing with a high tempo of preventive inspections to further slow down dengue transmission. Source eradication of mosquito breeding habitats and spraying of insecticide to control the adult mosquito population remain key to dengue prevention. NEA, together with the various agencies and other stakeholders represented in the Inter-Agency Dengue Task Force (IADTF), including Town Councils, have been checking and ridding our public areas and housing estates of potential mosquito breeding habitats.

Residents, especially those residing in dengue cluster areas, are urged to carry out the three protective actions against dengue:‘Spray, Apply, Wear’ or ‘SAW’ in short:

1.Spray insecticide in dark corners around the house
2.Apply insect repellent regularly
3.Wear long-sleeve tops and long pants

NEA advises members of the public to use mosquito repellent regularly to protect themselves from getting mosquito bites, especially if they are living in dengue cluster areas. 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’.

During the year-end school holidays, those who are planning to go on vacation are reminded to mosquito-proof their homes before they travel. You can keep your neighbourhood safe from dengue by taking these mosquito prevention measures. Please also refer to the poster on Dengue Prevention for Outbound Travellers

  • Cover all toilet bowls in the home
  • Cover all floor traps
  • Add sand granular insecticide to places that mosquitoes could potentially breed, such as flower vases and places, where stagnant water cannot not be removed
  • Clear blockages and adding Bti insecticide in roof gutters
  • Turn over all water storage containers
  • Ask a relative or close friend to check your home regularly for stagnant water if you are going away for a long period of time
  • Leave your contact details with your neighbours or the neighbourhood police post/centre so that you can be easily reached, if needed

Those showing symptoms suggestive of dengue should see a medical practitioner early, to be diagnosed and managed accordingly. Early diagnosis can facilitate better case management. Persons with dengue should apply mosquito repellent regularly, so that mosquitoes do not bite and pick up the virus from them before biting someone else, thus reducing dengue transmission. Symptoms suggestive of dengue 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.

Please visit the Ministry of Health’s website for more information on Dengue Fever and warning signs of severe dengue.

The latest updates can also be found on the NEA website, and myENV app.