Palau Travel Health Guide: No Malaria, an Operational Decompression Chamber, and the Dengue Story Most Guides Miss

Palau has no malaria risk, according to the CDC's country-by-country malaria table, and requires no yellow fever vaccination for direct US travelers. The bigger story most guides miss: Palau logged its first dengue cases in more than a decade in 2025, climbing from 6 confirmed infections in July to at least 26 by early September, with travelers carrying the virus on to Guam and Saipan. Palau is also one of the world's premier dive destinations, and unlike several other Pacific nations in this series, it has an operational hyperbaric decompression chamber at Belau National Hospital in Koror. The US State Department rates Palau at Level 1, Exercise Normal Precautions, updated January 7, 2026. Our clinical team prescribes azithromycin for traveler's diarrhea and ondansetron, never ibuprofen, for dengue-associated nausea. Start your visit on Wandr before you fly.

By Mark Karam, PA-C Last updated: October 10, 2026

Quick Facts: Palau Health at a Glance

• Region: Micronesia, western Pacific, an archipelago of more than 300 islands with a population of roughly 17,614. Capital functions are based in Ngerulmud on Babeldaob; most visitors stay in and around Koror, the commercial hub.
• CDC Malaria Risk: None. The CDC's malaria country table lists no malaria risk areas in Palau and recommends no chemoprophylaxis.
• Key Health Risk: Palau's first dengue cases in more than a decade, first confirmed in July 2025 and still climbing by early September 2025, with exported cases reaching Guam and Saipan.
• Not a Risk Here: No yellow fever vaccination requirement for direct US travelers.
• Recommended Vaccines: Hepatitis A for most travelers; typhoid, cholera, and other vaccines for some, depending on itinerary and length of stay. Confirm routine vaccines (MMR, Tdap/polio) are current.
• US Government Advisory: Level 1, Exercise Normal Precautions, updated January 7, 2026, with "Exercise increased caution" called out for the Rock Islands, smaller outlying islands, and Peleliu because of unexploded WWII-era ordnance.
• For Divers: Palau has an operational decompression chamber at Belau National Hospital in Koror, a genuine point of difference from several other Pacific destinations in this series.
• Travel Insurance Recommended: Yes, including medical evacuation coverage. Palau has one public hospital and a small number of private clinics, so serious illness or injury outside Koror may still require transfer.

Overview

Palau is a nation of more than 300 limestone and volcanic islands in the western Pacific, best known among US travelers for the Rock Islands Southern Lagoon, a UNESCO World Heritage site, and for some of the best scuba diving on the planet at sites like Blue Corner and the German Channel. Most US travelers connect through Guam, Manila, or Tokyo before landing in Koror, which functions as Palau's commercial center even though the capital itself sits across the water in Ngerulmud on Babeldaob.

The health picture here is genuinely good news on one front and a story worth taking seriously on another. Palau has no malaria and no yellow fever requirement, two real points of relief for a Pacific itinerary. At the same time, Palau worked through its first dengue cases in more than ten years in 2025, and our clinical team takes that fresh pattern seriously in how we prepare divers, families, and anyone island-hopping through the Rock Islands.

Dengue: Palau's First Outbreak in More Than a Decade

This is the story most existing Palau travel content does not cover, because it is recent and because Palau had gone so long without local dengue transmission that older guides simply do not mention it as a risk.

Palau's Ministry of Health, working with Belau National Hospital, confirmed 6 dengue infections among residents in July 2025, per reporting from Island Times. The Ministry noted that Palau had recorded no dengue cases for more than ten years before this cluster appeared, and two circulating strains were identified without the specific serotypes being named publicly at that point. Health authorities described themselves as "on high alert" and urged the public to "stay vigilant" with mosquito bite precautions.

The cluster did not stay small. By the week of August 26 to September 1, 2025, Palau's Ministry of Health had logged 26 dengue cases, and the outbreak crossed borders: the Commonwealth Healthcare Corporation in Saipan confirmed a dengue patient in early September who had recently returned from Palau, and Guam's territorial epidemiologist confirmed the island's first dengue case of the year was also contracted during a visit to Palau. Neither Guam nor Saipan reported local transmission as a result, since dengue does not spread person-to-person and requires the local Aedes mosquito population to pick it up from a biting infected traveler, but both jurisdictions issued public health statements urging vigilance in response.

For context on what a dengue cluster can look like here, Palau's prior documented outbreak ran from late 2018 into early 2019: Belau National Hospital logged 66 new cases from December through January 20, with 74.2% concentrated in Koror state, patients ranging in age from 3 to 88, and zero dengue-related deaths reported.

There is no vaccine or antiviral treatment for dengue in Wandr's medication catalog, and this guide makes no treatment claim for the virus itself. Prevention means not getting bitten by the Aedes mosquito, which bites mainly during the day, unlike the night-biting mosquito that spreads malaria. If you develop a sudden high fever, severe headache, rash, or body aches during or shortly after a Palau trip, our clinical team's guidance is specific: avoid ibuprofen, aspirin, and other NSAIDs, since they raise bleeding risk in dengue. Ondansetron is appropriate for the nausea that often comes with it, and acetaminophen (not an NSAID, and not currently in Wandr's catalog) is the standard over-the-counter choice for fever and pain. Any fever that persists beyond 24 to 48 hours, or that comes with bleeding or severe abdominal pain, needs prompt medical evaluation with your Palau travel history mentioned.

This section covers an active disease cluster with real case growth and cross-border spread; per our medical-sensitive content policy, it is flagged here for human clinical review for tone and currency before this post leaves Draft status.

Malaria: Not a Risk Here

This is one of the more straightforward facts in this guide. The CDC's country-by-country malaria table lists no malaria risk areas in Palau and recommends no chemoprophylaxis for any itinerary. Our clinical team does not prescribe antimalarial medication, including atovaquone-proguanil (Malarone), for a standard Palau trip; we reserve that for the malaria-endemic destinations elsewhere in this series.

No Yellow Fever Requirement, and Routine Vaccines

Palau sits outside the yellow fever risk zones recognized by international health authorities, so there is no yellow fever vaccination requirement for travelers arriving directly from the United States. A yellow fever certificate can still be required if your itinerary transits through a country with risk of yellow fever transmission, so check your full routing, not just your final stop.

Hepatitis A is recommended for most travelers to Palau, and typhoid, cholera, and other vaccines are recommended for some, depending on itinerary, length of stay, and planned activities, per guidance from the Norwegian Institute of Public Health. Our clinical team also recommends confirming that routine vaccines, including MMR and Tdap/polio, are current before any Pacific trip. Schedule your vaccine appointment through Wandr ahead of departure.

Traveler's Diarrhea and Water Safety

Traveler's diarrhea remains one of the most common complaints among visitors to the Pacific islands, and Palau is no exception, especially once travel moves beyond resort dining in Koror. The CDC's Yellow Book puts travelers' diarrhea attack rates at roughly 30% to 70% of travelers over a two-week trip, depending on how closely you stick to food and water precautions.

Our clinical team recommends carrying azithromycin as a first-line antibiotic, with ciprofloxacin as an alternative, plus dicyclomine for cramping and ondansetron for nausea. Stick to bottled or properly treated water outside hotels and dive operators with their own filtration systems, and be cautious with ice and raw seafood from informal vendors on the smaller islands.

Rabies: Not Flagged, But Not Officially "Rabies-Free" Either

Palau does not appear on the handful of government-maintained "rabies-free country" lists we checked, including Japan's designated-regions list, which names Fiji, Australia, New Zealand, Hawaii, and Guam as rabies-free Pacific destinations, but not Palau. At the same time, none of the major travel-health resources we reviewed flag rabies as a special precaution for Palau, and our clinical team is not aware of a recent domestic rabies case history there. Palau's own pet-import rules, which require vaccination and a quarantine period for animals arriving from countries it does not itself recognize as rabies-free, suggest a cautious domestic posture rather than a confirmed outbreak risk. Our practical guidance: any animal bite or scratch still deserves prompt wound washing with soap and running water and a same-day medical evaluation, but pre-exposure rabies vaccination is not standard guidance for a typical Palau itinerary.

Diving and the Decompression Chamber That Actually Works

Palau is one of the most celebrated dive destinations on earth, home to Blue Corner, the German Channel, and dozens of wall and wreck dives around the Rock Islands. That popularity makes one infrastructure fact genuinely reassuring: unlike several other Pacific nations in this series, Palau has an operational hyperbaric decompression chamber, located at Belau National Hospital (BNH) in Koror, for treating decompression sickness and other diving emergencies.

That does not mean diving here is risk-free. Confirm your dive operator is reputable and your dive computer and buddy checks are current, and make sure your travel insurance explicitly covers emergency medical treatment and, if needed, transport to BNH. For non-divers, Palau's famous Jellyfish Lake swim (when open to visitors) and snorkeling around the Rock Islands carry a different, much lower risk profile, but sun exposure and strong currents in some channels are still worth respecting.

Inter-Island Boat Travel: Motion Sickness

Getting out to the Rock Islands, the German Channel, or Peleliu almost always means a speedboat ride across open water, and these crossings can be considerably choppier than they look in photos. Motion sickness on these legs is a common complaint our providers hear from Palau travelers who do not usually get seasick elsewhere.

Meclizine and the scopolamine patch both work well for this, and hydroxyzine is a reasonable option for the anxiety and disrupted sleep that come with the long multi-leg journey over, whether you are routing through Guam, Manila, or Tokyo. Our Comprehensive Travel Package bundles these with the traveler's diarrhea medications above into a single pre-trip order.

Altitude: Not a Meaningful Risk Here

Palau's highest point, Mount Ngerchelchuus on Babeldaob, reaches about 242 meters (794 feet), far below the roughly 2,500-meter threshold where altitude illness becomes a genuine medical concern. Our clinical team would not recommend acetazolamide for a typical Palau trip.

The Safety Picture Beyond Health

The US State Department rates Palau at Level 1, Exercise Normal Precautions, in an advisory updated January 7, 2026, with no change from the prior rating. The advisory lists Health and Other as specific risk indicators and separately calls out "Exercise increased caution" for the Rock Islands, smaller outlying islands, and Peleliu, because of unexploded ordnance left over from World War II. That is a physical safety note, not a disease risk, but it is worth knowing before you go hiking or exploring off well-marked paths on those islands.

Practical Prep Timeline

• 4-6 weeks out: Confirm hepatitis A and routine vaccine (MMR, Tdap, polio) coverage, and ask our clinical team whether typhoid or cholera vaccination fits your specific itinerary.
• 1-2 weeks out: Pack a DEET or picaridin repellent for day-biting mosquitoes, and confirm your travel insurance explicitly covers medical evacuation and emergency dive-injury treatment, not just routine care.
• Before you fly: Pack your full medication kit rather than planning to buy items locally outside Koror, and check current dengue activity with Palau's Ministry of Health before departure, since case counts can change between booking and travel.

Medical Disclaimer

This guide is for general educational purposes and does not replace individualized medical advice. Health risks, vaccine guidance, and travel advisories change, and our clinical team reviews your specific itinerary, health history, and travel dates before prescribing anything. Entry and immigration requirements are set by the Republic of Palau and the US Department of State; confirm current requirements directly with Palau's immigration authorities or travel.state.gov before you travel, since this guide does not make visa or immigration determinations.

Frequently Asked Questions

Do I need malaria pills for Palau? No. The CDC lists no malaria risk areas in Palau, and our clinical team does not prescribe antimalarial medication for a standard Palau itinerary.

Is there a dengue outbreak in Palau right now? Palau confirmed its first dengue cases in more than a decade in July 2025, growing to at least 26 cases by early September 2025, with cases also detected in travelers who had returned to Guam and Saipan. Always check current status with Palau's Ministry of Health before departure, since dengue activity can change.

Do I need a yellow fever vaccine for Palau? No, not for direct travel from the United States. Palau sits outside the yellow fever risk zones recognized by international health authorities. A certificate can still be required if you are transiting through a country with yellow fever risk en route.

What vaccines do I need for Palau? Most travelers should have hepatitis A, and some should add typhoid or cholera vaccination depending on itinerary, on top of confirming routine vaccines like MMR and Tdap/polio are current. Our providers tailor this to your specific trip.

Is rabies a risk in Palau? Palau is not flagged as a rabies risk by major travel-health resources, but it also does not appear on official "rabies-free country" lists the way Fiji or Guam do. Any animal bite still warrants prompt wound washing and same-day medical evaluation.

Is it safe to scuba dive in Palau? Palau is one of the world's top dive destinations, and it has a genuine safety advantage over some neighboring Pacific nations: an operational decompression chamber at Belau National Hospital in Koror for treating decompression sickness. Choosing a reputable dive operator and confirming your insurance covers emergency dive-injury treatment are still worth doing.

Is Palau safe to visit right now? The US State Department rates Palau at Level 1, Exercise Normal Precautions, updated January 7, 2026. The advisory separately calls out increased caution in the Rock Islands, outlying islands, and Peleliu because of unexploded WWII-era ordnance, a physical safety note rather than a disease risk.

Do I need travel insurance for Palau? Yes, specifically insurance that covers medical evacuation and emergency dive-injury treatment. Palau has one public hospital and a small number of private clinics, so serious illness or injury may still require transfer or evacuation.

How far in advance should I prepare for a Palau trip? Start 4 to 6 weeks out for vaccines and standard medications, and finalize mosquito repellent and evacuation-inclusive travel insurance 1 to 2 weeks before departure.

Sources

1. CDC. Malaria Information and Prophylaxis, by Country: Palau (no risk areas listed). https://www.cdc.gov/malaria/travelers/country_table/p.html
2. US Department of State. Palau Travel Advisory (Level 1, updated January 7, 2026; Rock Islands/Peleliu unexploded-ordnance note). https://travel.state.gov/en/international-travel/travel-advisories/destination.plw.html
3. TravelAdvisory.io, aggregating US Department of State data. Palau Travel Advisory. https://www.traveladvisory.io/advisory/palau
4. Norwegian Institute of Public Health (FHI). Travel advice and vaccines: Palau. https://www.fhi.no/en/in/travel/traveladvice-vaccines/oceania/palau/
5. Pristine Paradise Palau. Health and Safety (Belau National Hospital, operational hyperbaric/decompression chamber). https://pristineparadisepalau.com/health-and-safety/
6. Island Times. "66 more dengue cases recorded since December" (January 25, 2019 historical outbreak; Koror concentration, age range, zero deaths). https://islandtimes.org/66-more-dengue-cases-recorded-since-december/
7. Island Times. "Palau records drop in flu cases but sees dengue return after a decade" (August 19, 2025; 6 confirmed July 2025 cases, first in 10+ years). https://islandtimes.org/palau-records-drop-in-flu-cases-but-sees-dengue-return-after-a-decade/
8. Island Times. "Palau's dengue outbreak spills over to neighboring islands" (September 2025; 26 cases Aug 26-Sep 1, Guam and Saipan exported cases). https://islandtimes.org/palaus-dengue-outbreak-spills-over-to-neighboring-islands/
9. World Health Organization, WPRO. Dengue Situation Update 736 (December 11, 2025; Palau not listed among active declared outbreaks or fatalities as of that date). https://cdn.who.int/media/docs/default-source/wpro---documents/emergency/surveillance/dengue/dengue_20251211.pdf
10. World Population Review, citing UN estimates. Palau Population (approximately 17,614, January 2026). https://worldpopulationreview.com/countries/palau
11. CDC Yellow Book. Travelers' Diarrhea chapter (attack rate ranges). https://www.cdc.gov/yellow-book/hcp/preparing-international-travelers/travelers-diarrhea.html
12. Japan Ministry of Agriculture, Forestry and Fisheries (MAFF). Designated rabies-free regions list. https://www.maff.go.jp/aqs/english/animal/dog/designated-regions.html
13. Wikipedia, citing survey data. Mount Ngerchelchuus (elevation, Palau's highest point). https://en.wikipedia.org/wiki/Mount_Ngerchelchuus
14. PetTravel.com. Palau pet import requirements (rabies-free-origin quarantine rules). https://www.pettravel.com/immigration/Palau.cfm

Note for reviewer: this run continued the destination-not-yet-covered priority category. Per the 2026-10-09 (Tonga) run log, the prior seven runs' working shortlist (Papua New Guinea, Vanuatu, Samoa, Tonga) was drafted down to zero except Papua New Guinea, which stayed passed over because its current US State Department advisory level could not be confirmed with confidence (secondary sources disagree sharply by publication date). This run independently re-verified via fresh Drive title and fullText searches across drafts/, published/, and rejected/ that zero dedicated posts exist for Palau, Solomon Islands, Micronesia (FSM), Marshall Islands, Kiribati, Nauru, or Tuvalu; Fiji was confirmed already covered. Picked Palau as this run's topic for a strong, current, genuinely differentiating angle versus the rest of this Pacific sub-series: Palau's first dengue cases in more than a decade (2025), a cross-border spillover into Guam and Saipan, and a dive-safety contrast with the Samoa/Vanuatu/Tonga posts, since Palau actually has an operational decompression chamber rather than a gap. US State Department advisory confirmed live via a successful direct travel.state.gov fetch this run (Level 1, "Exercise Normal Precautions," updated January 7, 2026, no change to overall level; separate "Exercise increased caution" guidance for the Rock Islands, outlying islands, and Peleliu over WWII unexploded ordnance), corroborated by traveladvisory.io. Pillar 6 weighting check: the last 8 drafted/published posts (Sierra Leone, Lesotho, Eswatini, Guinea, Liberia, Vanuatu, Samoa, Tonga) include 0 Travel Planning posts, no cap conflict, and this remains a Tier 2 destination topic rather than Pillar 6. Catalog-fit gate passed: Palau has no malaria (CDC country table lists no risk areas), so no antimalarial CTA applies; direct fit for traveler's diarrhea (azithromycin, ciprofloxacin, dicyclomine) and nausea/motion sickness (ondansetron, meclizine, scopolamine, hydroxyzine); genuine symptom-overlap fit for the 2025 dengue cluster, since dengue itself has no catalog treatment, but the CTA and "how to get it" framing route specifically to ondansetron for dengue-associated nausea, consistent with the Topic Selection Gate's case-2 guidance and the no-NSAID-for-dengue correction already established in the Samoa and Tonga drafts. No "delivered to your door" framing used anywhere in the post; CTAs used "start your visit," "schedule your vaccine appointment," and medication-specific product links instead. No visa or immigration determination given; the medical disclaimer directs readers to Palau's immigration authorities or travel.state.gov for current entry requirements. Did not claim Palau as officially "rabies-free," consistent with the Tonga precedent: a live check of Japan's MAFF designated rabies-free regions list names Fiji, Australia, New Zealand, Hawaii, and Guam, but not Palau, so this draft uses the same cautious "not flagged as a risk, but not officially designated rabies-free" language. Author rotation: the last three confirmed posts were Vanuatu (2026-10-07, Mark Karam, PA-C), Samoa (2026-10-08, The Wandr Team, with Alec Freling, MD as medical_reviewer), and Tonga (2026-10-09, Alec Freling, MD); continuing the PA-C -> Team -> MD cycle lands on Mark Karam, PA-C, bio verbatim from _agent-instructions.md Section 5b. Because the author is a named clinician rather than "The Wandr Team," no medical_reviewer field was added, consistent with prior-run precedent for named-author posts. 0 em-dashes, 0 smart quotes used in this draft (validated programmatically); YAML front matter validated with PyYAML (yaml.safe_load, 28 top-level keys parsed cleanly) before saving. Approximately 2,500 body words excluding sources and frontmatter (within the T2 destination-guide 2,000-3,000 word range), 9-question FAQ. At least 9 statistics/figures cited: Palau's population (~17,614, Jan 2026); zero CDC-listed malaria risk areas; the 2025 outbreak's 6 confirmed July cases (first dengue in 10+ years) growing to 26 by early September; dengue cases exported to Guam and Saipan; the 2018-2019 historical outbreak's 66 cases, 74.2% in Koror, ages 3-88, 0 deaths; CDC's 30%-70% travelers' diarrhea attack-rate range; Mount Ngerchelchuus's ~242m/794ft elevation (Palau's highest point, far below the ~2,500m altitude-illness threshold); the Level 1 advisory date (January 7, 2026); and the Rock Islands/Peleliu unexploded-ordnance caution note, above the 2+ CDC/WHO/peer-reviewed source and 3+ statistic minimums. Given the "medical-sensitive content always needs human review" guardrail and the fact that this post centers on a real, recent, cross-border disease cluster, the entire Dengue section is flagged in its own in-body reviewer note for a factual and non-alarmist tone check before this leaves Draft status. The WHO WPRO dengue situation-update PDF (source 9) was used only to confirm Palau was not listed among declared active outbreaks or fatalities as of December 11, 2025, not as a source of Palau-specific case counts, since it does not break those out; this should be spot-checked if a reviewer has access to a Palau-specific WHO or CDC bulletin. Featured image NOT selected this run: a live WebFetch attempt against Unsplash's search page for "palau" returned a PROVENANCE_REQUIRED error (no one available to approve in this unattended session), consistent with the access-wall pattern noted in every run log since late September. Rather than invent an unverified photo ID, this draft ships with query-only image fields (no url) and an image_status: NEEDS VERIFICATION flag plus this in-body reviewer note; nothing was appended to _image-registry.md or featured-images-log.md this run since no real photo ID was chosen, continuing the pending image-registry housekeeping note flagged in many recent run logs; a human should resolve whether Unsplash/Pexels fetches can be pre-approved for this scheduled task, or images sourced a different way. Internal links checked against _approved-internal-links.md (/destination-check, /features/vaccines, /medication/atovaquone-proguanil, /medication/azithromycin, /medication/ciprofloxacin, /medication/ondansetron, /medication/meclizine, /medication/scopolamine, /medication/hydroxyzine, /medication/comprehensive-kit, /medication/acetazolamide) and blog cross-links (dengue-fever-travelers-prevention-symptoms-treatment, malaria-prevention-travelers-complete-guide, jet-lag-physicians-guide, travel-health-guide-fiji, travel-health-guide-australia), all confirmed present in published/ via Drive title search before use. Dicyclomine and ibuprofen are named in body text only, not hyperlinked, since neither is in the confirmed medication-slug list in _approved-internal-links.md, consistent with prior-run precedent.

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• Travel Health Guide: Fiji
• Travel Health Guide: Australia

Our clinical team reviews every Palau itinerary before prescribing, from traveler's diarrhea coverage to nausea relief if a dengue-like illness hits. Start your visit on Wandr, browse the full medication catalog, or explore vaccine appointment booking and travel insurance options before you fly.