Dengue Fever Symptoms and Prevention: What Families Should Know

Dengue is a viral infection spread mainly through the bite of infected Aedes mosquitoes. These mosquitoes can bite during the day and often breed in small collections of standing water around homes, schools, and workplaces. Dengue can range from a mild illness to a serious condition, so recognising warning signs and getting timely medical advice are important.

Common dengue fever symptoms

Symptoms commonly begin several days after an infected mosquito bite. They may include sudden fever, severe headache, pain behind the eyes, muscle and joint pain, nausea, vomiting, and a rash. Symptoms can resemble other infections, and a healthcare professional may recommend testing based on the illness and local conditions.

Dengue warning signs you must not ignore

Serious dengue warning signs can appear as the fever begins to settle. Seek urgent medical care for severe or persistent abdominal pain, repeated vomiting, bleeding from the nose or gums, blood in vomit or stool, unusual drowsiness or restlessness, rapid breathing, cold or clammy skin, or marked weakness. Do not wait for every symptom to appear.

How to prevent dengue at home

• Remove standing water: Empty, scrub, or cover water containers, buckets, plant trays, old tyres, and other items that collect water.
• Cover water storage: Keep tanks and containers tightly covered and clean them regularly.
• Use mosquito protection: Apply an approved insect repellent according to its label. Wear long sleeves and trousers when practical, and use screens or mosquito nets where appropriate.
• Check weekly: Inspect balconies, rooftops, courtyards, and drains for places where water may collect.
• Work together: Encourage neighbours and local communities to remove breeding sites, as mosquitoes can travel between nearby properties.

What should you do if you suspect dengue?

Contact a healthcare professional promptly, especially if you have fever and live in or have recently visited an area where dengue occurs. Rest and follow medical guidance on fluids and monitoring. Attend follow-up appointments if advised, because the course of the illness can change over time. Do not take antibiotics unless they are prescribed for a separate, appropriate reason; antibiotics do not treat dengue virus.

Dengue prevention checklist for every week

Choose one day each week to inspect the home and nearby outdoor areas. Empty water from plant saucers, buckets, discarded containers, toys, tyres, and other objects that can collect rainwater. Scrub the inside of water containers before refilling them, because mosquito eggs may cling to their sides. Keep storage tanks covered and make sure drains and roof areas do not hold stagnant water. If a container must remain filled, follow local public-health advice on how to keep it safely covered and maintained.

Check window screens and door gaps, and use an approved insect repellent according to its label. Repellent choice and use may differ for young children and pregnant people, so ask a healthcare professional or pharmacist when uncertain. Community action matters: if several nearby properties have breeding sites, treating only one yard may not be enough to reduce mosquito exposure.

Keep a close eye on symptoms

If a family member develops a fever in an area where dengue occurs, arrange medical advice and explain any recent travel or local exposure. Do not assume that every fever is dengue, because malaria, influenza, and other infections can cause similar symptoms and may require different testing and treatment. Follow the clinician’s advice about monitoring, fluids, and follow-up. If warning signs appear, seek urgent care immediately—even if the fever has started to fall.

Frequently asked questions

Can dengue spread directly from one person to another?

Dengue is usually spread through infected mosquitoes, not ordinary casual contact. Preventing mosquito bites helps protect the wider household.

Can a person get dengue more than once?

Yes. Infection with one dengue virus type does not provide complete protection against all types. A later infection can carry a higher risk of severe illness.

Is the fever settling a sign that the danger has passed?

Not always. Warning signs can begin around the time the fever decreases, so continue monitoring symptoms and follow medical advice.

Health note: This article is for education only. Dengue can become serious quickly; urgent symptoms require immediate professional care.