Travel guide
Preventing dengue while travelling
Aedes mosquitoes can bite during both day and night, so dengue prevention cannot be limited to sleeping under a net.
Prepared by the FlyVentis editorial team and regularly reviewed for travel and event accuracy.
Dengue is transmitted by infected Aedes mosquitoes. Because they can bite by day and night, accommodation, clothing and repellent need to work throughout the day.
Use the mosquito prevention guide and prepare fever response with the travel emergency guide.
Check current risk before departure
Do not plan as though one widely available dengue vaccine covers all travellers. Eligibility can depend on country, age, residence and documented previous infection.
- Open the official destination health page.
- Check current outbreak and travel notices.
- Pack enough effective repellent.
- Choose air-conditioned or well-screened accommodation.
Keep protection active during the day
Apply repellent according to its label, wear loose long clothing and reduce mosquito entry. If using sunscreen too, check product instructions for application order.
Monitor symptoms and bites after returning
Seek care for fever or compatible symptoms and give the travel location. CDC advises travellers returning from a dengue-risk area to prevent mosquito bites for three weeks, even if they feel well.
| Check | Purpose |
|---|---|
| Before | Current risk and supplies |
| During | Day-and-night bite prevention |
| Symptoms | Medical assessment |
| After | Three weeks of bite prevention |
Official source
Frequently asked questions
Do dengue mosquitoes only bite at night?
No. Aedes mosquitoes can bite during the day and night.
Is there a dengue vaccine for every traveller?
No. Eligibility is limited and depends on specific criteria.
Why prevent bites after the trip?
It helps reduce the chance that a mosquito acquires the virus from an infected traveller and passes it on.
