Dengue is the fastest spreading mosquito-borne viral disease in the world, presenting a growing burden on Australian travellers.
Dengue virus can cause severe flu-like illness and, in some cases, life-threatening complications.
In 2025, more than 5.5 million Australians travelled to destinations where dengue is common.1 Knowing your risk and getting pre-travel health advice can help you prepare for your trip.
Explore the annual cases of dengue amongst Australians1
Source: https://nindss.health.gov.au/pbi-dashboard/
Data updated quarterly.
Abbreviations: NNDSS, National Notifiable Disease Surveillance System.
Where is the risk?
Dengue is one of the most common travel-acquired infections among Australians visiting tropical and subtropical destinations and can result in serious illness and hospitalisation.
Abbreviations: CFR, case fatality rate; PEP, post-exposure prophylaxis.
Adapted from: Steffen et al. 2023.3
Useful links
Click the tiles below to learn more about dengue, staying safe while travelling, and available health services.
For healthcare professionals only
Accredited medical education
- Understand dengue epidemiology, symptoms and traveller risk factors
- Learn practical patient assessment and follow-up approaches
- Build confidence discussing dengue prevention with travellers
- Earn CPD points upon completion
REFERENCES
- World Health Organization. Dengue: the fastest growing mosquito-borne disease in the world. 2010. Available at: https://www.who.int/news/item/29-10-2010-dengue-the-fastest-growing-mosquito-borne-disease-in-the-world. Accessed July 2026.
- Takeda Pharmaceuticals Australia Pty Ltd. Data on file.
- Steffen R et al. J Travel Med. 2023 Nov 18;30(7):taad085.