Dengue cases
- 122 dengue cases were reported in the week ending 25 July 2026, an increase of two cases from the previous week.
- The clusters at Countryside Road/Lentor Avenue (199 cases) and Jalan Tari Dulang/Jalan Tari Payong (23 cases) are fast-growing. Mosquito breeding has been detected in receptacles such as domestic containers, flowerpot plates, flowerpots and refuse bins.
- Four other clusters classified under red colour alert (i.e. cluster with 10 or more cases) include:
- 42-case cluster at Lilac Drive/Mimosa Road
- 36-case cluster at Belgravia Drive/Kasai Road
- 21-case cluster at Luxus Hill Drive/Seletar Green Avenue
- 13-case cluster at Ho Ching Road/Yuan Ching Road
- The cluster at Jalan Bangau/Jalan Jarak (32 cases) closed last week.
Peak dengue season
As Singapore has entered the traditional peak dengue season from May to October, the public is urged to remain vigilant and eradicate mosquito breeding sources to minimise the risk of dengue transmission in the community. Our tropical climate and high population density create ideal conditions for mosquitoes to thrive year-round, with the traditional peak period with warmer temperatures seeing accelerated mosquito development and virus multiplication.
Intensified vector control operations are ongoing at clusters and surrounding areas. Efforts include spraying of insecticide at residential premises and common areas, larviciding at common areas, and fogging to kill adult mosquitoes. In addition to ongoing vector control efforts, NEA has been working closely with community partners to conduct outreach activities at dengue clusters.
NEA urges immediate action to remove stagnant water and suppress the Aedes mosquito population at their premises, by 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
Residents, especially those residing at dengue cluster areas, or those diagnosed with or suspected to have dengue, should carry out the ‘S-A-W’ actions to prevent mosquito bites, which is how the disease spreads to more mosquitoes and people.
- Spray insecticide in dark corners around the house
- Apply insect repellent regularly
- Wear long-sleeve tops and long pants
Collective community action and vigilance are critical to help prevent a surge in dengue cases. 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 transmission.
Other mosquito-borne diseases
- There are currently no Zika clusters or areas with likely Zika transmission.
- There are currently no chikungunya clusters. The majority of chikungunya infections occurred in individuals with recent travel to Chikungunya-affected areas.
The presence of Aedes mosquitoes in Singapore poses an ongoing risk for the spread of these diseases. As these mosquitoes can transmit dengue, Zika, and Chikungunya, maintaining low mosquito populations remains essential for public health protection.
Please visit the Communicable Diseases Agency’s website for the number of cases reported.
- Persons showing symptoms suggestive of dengue, Zika or chikungunya infections should see a medical practitioner early, to be diagnosed and managed accordingly. Early diagnosis can facilitate better case management.
- Those diagnosed with or suspected of having these mosquito-borne diseases are urged to practise the 'S-A-W' actions to prevent mosquito bites. This is crucial as it helps break the transmission cycle and prevents the diseases from spreading to more mosquitoes and people.
- Those with dengue, Zika or chikungunya infections 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.
- 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’.
Precautions for Zika
- Although rare, Zika virus infection in pregnant women can cause birth defects such as microcephaly in babies. While there is currently no evidence that pregnant women are more likely to get the Zika virus infection, the consequences can be more serious if a pregnant woman is infected. Pregnant women with symptoms of possible Zika virus infection should seek medical attention immediately and consult their Obstetrics and Gynaecology (O&G) doctor.
- Men who are confirmed positive for Zika should practise safer sex through the correct and consistent use of condoms or abstain from sexual intercourse for at least three months after recovery.
Please visit the Communicable Diseases Agency’s website for more information on Dengue, Zika and Chikungunya.
The latest updates can also be found on the NEA website and myENV app.