Singapore's tropical climate makes it one of the most mosquito-friendly environments in the world — warm temperatures, high humidity, and frequent rainfall create near-perfect conditions for Aedes mosquitoes to breed and thrive year-round.
The numbers tell a fluctuating story. Singapore recorded 32,325 dengue cases in 2022 — almost six times the figure from 2021. Cases then fell significantly to 9,949 in 2023, before rising again to 13,651 in 2024, driven partly by a change in the dominant dengue virus serotype and one of the hottest years on record. Encouragingly, 2025 saw a dramatic drop to approximately 3,990 cases — a 70% decline from 2024 and the lowest figure in seven years, attributed in part to growing community immunity and the expansion of NEA's Project Wolbachia mosquito control programme.
However, experts caution against complacency. With Singapore's population immunity remaining relatively low and the potential for new serotypes to emerge, dengue remains an ongoing public health concern. Staying vigilant year-round is essential for every household.
The good news? There are practical, effective steps you can take to protect yourself, your family, and your home. Read on for a breakdown of dengue fever symptoms and six proven ways to reduce your risk.
Symptoms of Dengue Fever
Dengue fever is a viral infection transmitted through the bite of an infected Aedes mosquito. There is currently no specific antiviral medication for dengue — treatment focuses on managing symptoms and preventing complications, which makes early detection all the more important.
Symptoms can range from mild to severe and typically appear 4 to 10 days after a mosquito bite. Seek medical attention promptly if you or a family member experience any of the following:
- A sudden high fever lasting 2 to 7 days
- Severe headache with pain behind the eyes
- Nausea or vomiting
- Aching joints and muscles
- Mild bleeding, such as nosebleeds or gum bleeding
- Skin rashes
In more serious cases, dengue can progress to severe dengue (dengue haemorrhagic fever), which requires immediate hospitalisation. Warning signs include persistent vomiting, severe abdominal pain, rapid breathing, and bleeding gums — do not wait if these symptoms appear.
6 Ways to Prevent Dengue at Home
You can reduce your risk of contracting dengue fever with these simple preventive measures.
1. Eliminate Stagnant Water
The single most effective thing you can do to reduce dengue risk is to eliminate mosquito breeding grounds — and that starts with stagnant water. Aedes mosquitoes need as little as a bottle cap's worth of standing water to lay their eggs, making even the smallest puddles or containers a potential hazard.
Do a thorough sweep of your home and surroundings regularly, and flip, cover, or drain any objects that can collect water, including:
- Flower pots and plant saucers
- Pails and buckets
- Pet water dishes
- Children's outdoor toys and play equipment
- Old tyres
- Roof gutters and drains
NEA recommends the "Mozzie Wipeout" routine — a 10-minute check of your home every week — as a simple but powerful habit to keep breeding sites in check.
2. Wear Long-sleeved Clothing
A simple but often overlooked precaution: covering up is one of the most reliable ways to avoid mosquito bites, particularly during peak mosquito activity hours in the early morning and late afternoon.
Long-sleeved shirts and long trousers create a physical barrier that makes it significantly harder for mosquitoes to reach your skin. Lightweight, breathable fabrics make this practical even in Singapore's heat. Light-coloured clothing is also preferable, as mosquitoes are more attracted to dark colours.
3. Use Insect Repellent
Insect repellents are an essential line of personal defence. In Singapore, two main types are available: topical repellents applied directly to skin or clothing, and spatial repellents designed to protect a specific area.
Topical Repellents
Most topical repellents contain active ingredients such as DEET, Picaridin, or IR3535, which interfere with a mosquito's ability to detect and locate you. DEET (N, N-Diethyl-meta-toluamide) remains one of the most well-studied and effective options available.
General safety guidelines for using topical repellents:
- Patch test on a small area of skin before first use to check for reactions
- Apply only to exposed skin and clothing — avoid open wounds or irritated skin
- Always apply sunscreen before repellent, not after
- Never spray directly onto the face — apply to hands first, then spread carefully, avoiding eyes, mouth, and nostrils
- Wash hands thoroughly after application
- Do not use expired products
Spatial Repellents
Spatial repellents — including coils, electric vaporisers, and diffusers — emit active substances such as D-trans allethrin or prallethrin that repel mosquitoes in a given area. They're particularly useful for outdoor spaces like balconies or patios.
General safety guidelines for using topical repellents:
- Always use in well-ventilated areas
- Do not inhale fumes directly — discontinue use if you experience breathing difficulties
- Never leave active coils or vaporisers unattended
- Keep out of reach of children and pets
- Do not place near food preparation areas
- Discard expired products promptly
How to Mosquito-proof Your Home to Prevent Dengue
Mosquito-proofing your home can minimise your exposure to Aedes mosquitoes. Here are some ways to help you create a safe and mosquito-free living environment.
4. Use Nippon Paint Mozzieguard
Beyond conventional repellents, one of the most innovative ways to mosquito-proof your home is through your wall paint.
Nippon Paint MozzieGuard is a specially formulated interior paint that actively repels mosquitoes. Its unique active ingredient disrupts a mosquito's ability to land on painted surfaces — and remains effective for at least 24 months after the paint has dried, providing long-lasting protection that works around the clock.
MozzieGuard has been independently tested by a third-party laboratory in accordance with World Health Organisation (WHO) regulations. In testing, Aedes mosquitoes exposed to MozzieGuard-coated surfaces showed a mortality rate of over 90% — a compelling result for any Singapore household.
Beyond its protective function, MozzieGuard performs just like a high-quality interior paint, available in a wide range of colours so you don't have to compromise on your home's aesthetic to stay protected.
5. Install Mosquito Door and Window Screens
Insect screens keep insects out of your home. (Shutterstock/Sutichak)
Keeping mosquitoes out of your home in the first place is far easier than dealing with them once they're inside. Installing fine mesh screens on doors and windows creates a reliable physical barrier without sacrificing ventilation — a particularly important consideration in Singapore's warm climate, where windows are often kept open.
When installing screens, ensure they are securely fitted with no gaps or openings along the edges. Inspect them regularly for tears or damage, and repair any holes promptly — even a small gap is enough for a mosquito to squeeze through.
6. Use Mosquito Nets
For an additional layer of protection while you sleep, a properly hung mosquito net is one of the most time-tested solutions available. Hang the net around your bed so that it drapes all the way to the floor on all sides, with no gaps.
Check your net regularly for holes — even small punctures can render it ineffective. For families with young children or infants, mosquito nets over cots and cribs offer an extra layer of reassurance, particularly during dengue season.
FAQs About Dengue Fever and Prevention
When is dengue season in Singapore?
Dengue transmission tends to peak between June and October, when higher temperatures accelerate mosquito breeding and the reproduction of the dengue virus. However, dengue cases occur throughout the year in Singapore, so year-round vigilance is important. While 2025 saw a welcome drop to around 3,990 cases — the lowest in seven years — experts warn that case numbers can spike rapidly if a new dominant serotype emerges, as happened in 2024.
Where can I find current dengue clusters in Singapore?
Dengue clusters change frequently. The most up-to-date information is available on the NEA Dengue Cluster Map at nea.gov.sg. Construction sites are particularly prone to becoming dengue clusters due to the presence of stagnant water and irregular waste management — if you live near an active construction site, extra precautions are advisable.
Can dengue spread from person to person?
No — dengue is not contagious and cannot spread directly between people. Transmission occurs when a mosquito bites an infected person and then bites someone else, passing on the virus in the process.
Do ultrasonic mosquito repellent devices work?
Despite bold marketing claims, scientific research has consistently found that ultrasonic devices and mobile apps claiming to repel mosquitoes through high-frequency sound are not effective. Stick to proven methods — repellents, screens, and eliminating breeding sites.
What should I do if I’m bitten by an Aedes mosquito?
Avoid scratching the bite. Apply an over-the-counter antihistamine or anti-itch cream to relieve discomfort, and monitor yourself for dengue symptoms over the following days. If you develop a sudden fever or any of the symptoms listed above, visit a doctor promptly.
Stay Proactive, Stay Protected
Dengue prevention is a shared responsibility — and the most effective approach combines personal habits, home protection measures, and community awareness. By eliminating breeding grounds, using repellents consistently, and fortifying your home with solutions like Nippon Paint MozzieGuard, you can significantly reduce your household's exposure to dengue risk.
Learn more about Nippon Paint MozzieGuard and find it at your nearest retailer at nipponpaint.com.sg.
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