Direct answer: For international travel, reduce bug-bite risk by checking destination-specific health guidance before departure, using an appropriate EPA-registered repellent, wearing protective clothing, using permethrin-treated clothing or gear when appropriate, sleeping in screened or air-conditioned rooms or under a bed net when needed, checking for ticks after outdoor activity, and inspecting lodging and luggage for bed bugs. The right precautions depend on the destination and the activities you plan.
CDC’s 2026 Yellow Book notes that vector-borne diseases occur at travel destinations around the world and that bite prevention is important because vaccines or preventive medicines are unavailable for many of them. This guide is designed for U.S. travelers and focuses on practical exposure reduction rather than destination-specific diagnosis.
Before you travel: check the destination and your activities
Risk is not determined by country name alone. Hiking, camping, jungle or forest travel, rural stays, animal contact, beach trips, and sleeping without screens can change the types of arthropods you may encounter. Check the current CDC Travelers’ Health destination page and any relevant local public-health guidance before departure.
Use an effective insect repellent
For skin exposure, use an EPA-registered repellent and follow the label. CDC travel guidance commonly discusses active ingredients such as DEET, picaridin, IR3535, oil of lemon eucalyptus/PMD, and 2-undecanone for appropriate uses. Product instructions, age restrictions, and the target pest matter.
Do not rely on an unlabeled homemade mixture as your primary protection in an area where mosquitoes or ticks can transmit disease.
Use clothing and gear as a second layer
Long sleeves, long pants, socks, and closed shoes can reduce exposed skin. For appropriate trips, permethrin-treated clothing, boots, socks, tents, or other gear can add protection. Permethrin products intended for clothing or gear should be used according to the label and should not be applied directly to skin.
Choose safer sleeping arrangements
When possible, stay in air-conditioned or well-screened rooms. If sleeping areas are open to the outdoors or local guidance recommends it, use an appropriate bed net. Tuck the net correctly and check for gaps.
What about bed bugs in hotels?
CDC notes that bed bugs are not known to transmit disease to humans, but they can cause bites and can travel in luggage, clothing, and personal belongings. Inspect the sleeping area for obvious signs, keep luggage organized and away from suspected infestations, and inspect belongings when you return if exposure is suspected.
Check for ticks after outdoor activity
After hiking, camping, brush exposure, or time in tick habitat, check the entire body, clothing, gear, and travel companions. Check pets when they are part of the trip. Remove an attached tick promptly using recommended technique rather than coating or burning it.
What should you do if you are bitten while traveling?
- Move away from the exposure source when possible.
- Wash the area gently and avoid repeated scratching.
- Document the date, location, activity, and symptom timeline.
- For an attached tick, remove it promptly and record where the exposure occurred.
- Seek urgent or emergency care for severe systemic symptoms rather than waiting to identify the exact insect.
Which symptoms should change the plan?
Seek emergency care for trouble breathing, swelling of the tongue or throat, fainting, collapse, severe confusion, or a rapidly progressing whole-body allergic reaction. Seek medical evaluation for fever, an expanding or unusual rash, worsening pain or swelling, pus, red streaking, neurologic symptoms, or systemic illness after a relevant exposure.
After travel: keep the exposure history
If you develop fever, a rash, neurologic symptoms, or another significant illness after travel, tell the clinician where you traveled, the dates, the outdoor activities, any known bites or attached ticks, animal contact, and when symptoms began. Travel geography can be clinically important even when the original bite mark is gone.
Frequently asked questions
Do I need the same repellent for every destination?
No. Choose an EPA-registered product appropriate for the insect or tick risk, the length of exposure, the traveler’s age, and the product label. Destination and activity matter.
Can I put permethrin directly on my skin?
Products intended for treating clothing or gear are not skin repellents. Follow the label and use skin repellents separately when needed.
Do bed bugs in hotels spread disease?
CDC states that bed bugs have not been shown to transmit disease to humans, but they can bite and can hitchhike in luggage and clothing.
Should I take antibiotics after every tick bite while traveling?
No. CDC Yellow Book guidance does not recommend antibiotics as routine prophylaxis for all suspected arthropod exposures. Treatment decisions depend on the specific exposure, destination, symptoms, and clinical guidance.
Related StingHelp guides
Authoritative references
- CDC Yellow Book 2026 — Mosquitoes, Ticks, and Other Arthropods
- CDC Travelers’ Health — Destination Guidance
Educational information for U.S. travelers. Destination risks and recommendations change, so check current CDC and local public-health guidance before travel.
