What should you know about an NS1-positive dengue test?

NS1 is a dengue virus protein that can be detected in blood early in illness. A positive result fits with dengue, but a clinician interprets it alongside the timing of symptoms, examination and other tests. Fever, headache, chills, muscle aches and joint pain can occur, while some people have few symptoms.

Dengue can change as the fever settles, so feeling better does not always mean monitoring can stop. Easy bruising or bleeding needs attention. The illness is transmitted by mosquitoes; preventing bites helps protect people nearby from the same mosquito cycle.

Contact a healthcare professional for an assessment and follow the agreed review plan. Rest, take frequent fluids and use only fever relief recommended for you. Avoid aspirin, ibuprofen and other medicines that may increase bleeding unless a clinician specifically tells you to use them. Do not self-start antibiotics.

Use mosquito protection while unwell, including screens, repellent and covered clothing. Keep a record of fever, fluid intake, urine output, pain, vomiting and any bleeding so changes are easier to report.

Get urgent medical help for severe abdominal pain, repeated vomiting, bleeding from the nose or gums, blood in vomit or stool, unusual drowsiness, restlessness, fainting, breathing difficulty, cold clammy skin or very little urine. Infants, older adults, pregnant people and anyone with significant medical conditions may need a lower threshold for review.

Ask when you need repeat blood tests, which medicines are safe, how much fluid is suitable, how to prevent mosquito bites, and which symptoms should take you directly to emergency care.