Travel Health Guide: Bolivia — Altitude, Yellow Fever, Malaria, Dengue, and the One Risk Most Travelers Miss

Bolivia is the most altitude-intensive country a US traveler can visit. La Paz sits at 3,640 meters (11,942 ft). El Alto International Airport, where most international flights land, is 4,061 meters (13,325 ft), the highest international airport in the world. Salar de Uyuni is 3,656 meters (11,995 ft), and standard southwest-circuit tours regularly cross passes above 5,000 meters. Acute mountain sickness is the rule, not the exception: at sustained altitudes over 3,000 meters, 40 to 50 percent of unacclimatized travelers develop symptoms within 12 hours of arrival. That single fact reorganizes every other health decision for a Bolivia trip. As an ER physician, here is what I tell patients heading to Bolivia: pre-treat for altitude with acetazolamide (Diamox), carry yellow fever proof if you are entering from a yellow-fever country, fill an antimalarial only if your itinerary includes the Amazon basin or Beni/Pando departments, take Chagas exposure seriously in rural southern Bolivia, and do not underestimate the 2024-2026 dengue surge that has now reached altitudes above 2,500 meters.

Quick Reference: Bolivia Health Requirements

Why Bolivia Demands More Health Prep Than Almost Anywhere

Most South American destinations require travelers to manage one or two of the standard tropical risks. Bolivia stacks them. The country covers four distinct ecological zones (Altiplano, Yungas cloud forest, Amazonian lowlands, and the southern Chaco), and your health plan changes with the elevation at which you sleep.

In the ER I see two patterns from Bolivia travelers more often than any other South American destination: severe acute mountain sickness in patients who flew straight into El Alto from sea level, and high-fever returns from the Amazon basin (malaria, dengue, or both). A third, quieter pattern surfaces in primary care years later: positive Chagas serology in travelers who spent weeks staying in rural adobe housing in the south. Each of these is preventable with pre-trip planning. None of them are optional risks for an unprepared traveler.

The CDC and the WHO/PAHO have published updated guidance reflecting the 2024 historic dengue year in the Americas and the geographic expansion of Aedes aegypti up to 2,700 meters in the Andes. Bolivia's Cochabamba (2,558 m) recorded its largest dengue outbreak ever in 2024. Travel planning that treats Bolivia as "just another Andes country" is no longer accurate.

Altitude Sickness in Bolivia: The Risk That Reorganizes Your Trip

Acute mountain sickness (AMS) is the dominant medical risk in Bolivia, and unlike malaria or dengue, it is essentially universal at the altitudes most travelers will sleep at. The two-question rule I use in the ER: how high are you sleeping, and how fast did you get there. Bolivia answers both unfavorably. Most international travelers fly from sea level (Miami, Lima, Panama City, Santa Cruz) directly into La Paz/El Alto, gaining over 4,000 meters in a single afternoon.

Altitudes Travelers Will Encounter

AMS Symptoms to Recognize

AMS typically begins 2 to 12 hours after arrival at altitude and presents with at least one of the following alongside a headache: nausea or vomiting, fatigue or weakness, dizziness or lightheadedness, and insomnia or disturbed sleep. The Lake Louise Score is how clinicians grade severity. If a traveler has a headache plus any one symptom at moderate intensity, that meets the AMS threshold.

The dangerous progressions are high-altitude pulmonary edema (HAPE) and high-altitude cerebral edema (HACE). HAPE looks like shortness of breath at rest, a wet-sounding cough, and pink-tinged sputum. HACE looks like confusion, stumbling, or inability to walk a straight line. Either one is a medical emergency requiring immediate descent. Travelers I have treated for HAPE in Bolivia have, without exception, ignored early AMS symptoms and kept ascending.

Prevention: What Actually Works

Three things move the needle for Bolivia travelers.

First, acetazolamide (Diamox). Started 24 hours before ascent at 125 mg twice daily, continued for the first 48 hours at altitude, this drug cuts AMS incidence roughly in half in randomized trials. It is the single best pharmacologic intervention for travelers flying into La Paz or El Alto. In my practice, I prescribe Diamox to essentially every patient whose first night will be at or above 3,000 meters. Side effects are mild and predictable: tingling in the fingers, altered taste with carbonated drinks, and increased urination.

Second, staged ascent. If your itinerary allows, fly into Santa Cruz (416 m) or Sucre (2,810 m) first and spend 1 to 2 nights before going up to La Paz. This is the single most effective non-drug intervention. If your itinerary does not allow staged ascent, prioritize Diamox and a low-exertion first 48 hours in La Paz.

Third, hydration and behavior. Drink 3 to 4 liters of water per day at altitude. Avoid alcohol entirely for the first 48 hours. Eat carbohydrate-forward meals (your body prefers carbs for fuel at altitude). Coca leaf tea (mate de coca) is the local remedy. It is not a substitute for Diamox, but it does not interfere either, and many travelers find it helpful for mild symptoms.

Wandr offers acetazolamide (Diamox) prescriptions sent to your local pharmacy before you fly. Most travelers complete the questionnaire in under 5 minutes, our clinicians review within hours, and the prescription is called in to a pharmacy near you. Get altitude sickness medication for Bolivia.

Yellow Fever: When Bolivia Requires Proof, When the CDC Recommends the Shot

Bolivia has two yellow fever rules that travelers conflate: an entry requirement (legal) and a CDC vaccination recommendation (medical).

Entry requirement. Bolivia requires a valid International Certificate of Vaccination or Prophylaxis (ICVP, "yellow card") for travelers age 1 year and older arriving from a country with risk of yellow fever transmission. If you are flying directly from the United States and have no yellow-fever-risk countries on your itinerary, you do not legally need to show a yellow card at immigration. If you have been in Brazil, Peru's Amazon, Colombia, Ecuador's Amazon, French Guiana, Suriname, Guyana, Venezuela, or many African yellow-fever-risk countries within the past 10 years, expect to be asked for proof.

CDC vaccination recommendation. The CDC recommends yellow fever vaccination for travelers age 9 months and older going to areas below 2,300 meters elevation east of the Andes, which includes the entire departments of Beni, Pando, and Santa Cruz, plus designated areas of Chuquisaca, Cochabamba, La Paz, and Tarija. The vaccine is not recommended for travel limited to areas above 2,300 meters, including the cities of La Paz and Sucre.

In practice, this means: if your trip is La Paz, Uyuni, Lake Titicaca, and Sucre, you do not need the yellow fever vaccine medically. If your trip includes Madidi National Park, Rurrenabaque, the Pampas, Noel Kempff, or the Santa Cruz lowlands, you do. The vaccine takes 10 days to become valid by international entry standards, so plan accordingly.

Wandr does not currently administer yellow fever vaccine through its booking flow because YF must be given at a designated US YFV center and your yellow card stamped on-site. For YF, locate your nearest CDC-authorized yellow fever clinic 10+ days before departure. For every other Bolivia vaccine recommendation (Hep A, typhoid, Hep B, rabies pre-exposure, Tdap, MMR boost, polio booster, flu), book online through Wandr. Read our Yellow Fever Vaccine Guide.

Malaria in Bolivia: The Amazon Basin Risk

Malaria in Bolivia is geographically restricted, but where it exists, it is endemic year-round. According to the CDC, malaria risk is present throughout the country below 2,500 meters elevation, with the highest risk concentrated in the northern departments of Beni and Pando. The dominant species is Plasmodium vivax (99%) with a small fraction of Plasmodium falciparum (1%). This species distribution matters because P. vivax has dormant liver-stage parasites (hypnozoites) that can relapse months to years after the original infection without specific anti-hypnozoite treatment.

Where Travelers Actually Need Antimalarials

Standard tourist itineraries through La Paz, Uyuni, Lake Titicaca, Sucre, and Cochabamba do not require malaria prophylaxis. The destinations that do require prophylaxis are the Amazon entries: Rurrenabaque, Madidi National Park, the Pampas (Beni), Riberalta, Cobija, Trinidad, San Borja, and any extended travel in Pando or Beni. Lowland Santa Cruz beyond the city itself can warrant prophylaxis depending on rural exposure.

Antimalarial Options

CDC-approved prophylaxis options for Bolivia are atovaquone-proguanil (Malarone), doxycycline, mefloquine, and tafenoquine. Chloroquine is no longer recommended due to resistance.

For most travelers I prescribe atovaquone-proguanil (Malarone). It is the best-tolerated option, dosed once daily, started 1 to 2 days before entering the malaria zone, continued daily during exposure, and continued for 7 days after leaving the zone. Doxycycline is cheaper but requires 2-day pre-departure start, sun-sensitivity precautions, and continuation for 4 weeks after exposure. Mefloquine works once weekly but has psychiatric side effects that exclude many travelers.

Tafenoquine is approved both for prophylaxis (Arakoda) and for radical cure of P. vivax (Krintafel). Because Bolivia's malaria is 99% P. vivax, a traveler who develops malaria after returning to the United States may need an 8-aminoquinoline (tafenoquine or primaquine) after standard treatment to clear the dormant liver parasites and prevent relapse. This is not a pre-trip decision but a worth-knowing-about clinical reality.

In addition to medication, mosquito-bite prevention is essential: 20-30% DEET, picaridin, IR3535, or oil of lemon eucalyptus on exposed skin; permethrin-treated clothing; bednet sleeping in non-screened lodges.

Wandr's clinicians prescribe Malarone for Bolivia after a short online questionnaire. The prescription is called in to your local pharmacy for pickup before you fly. Get malaria prophylaxis for Bolivia. Read our Malarone vs Doxycycline guide.

Dengue: The 2024-2026 Surge Changed the Map

Dengue fever in Bolivia is no longer just an Amazon-basin disease. The PAHO 2024 Region of the Americas dengue surge reported the highest dengue case count ever recorded in the hemisphere (13+ million cases), and Bolivia experienced a record year. The 2024 outbreak in Cochabamba (2,558 m) was the largest dengue outbreak ever recorded at that altitude. Aedes aegypti, the primary dengue vector, has now expanded its range across nearly two-thirds of Bolivian territory and reaches altitudes up to 2,700 meters in the Andes.

For 2026, PAHO has issued an epidemiological alert about increased circulation of DENV-3 across the Americas, which raises the risk of severe dengue in travelers with prior dengue infection. Practically speaking, every Bolivia traveler whose itinerary includes Santa Cruz, Cochabamba, the Amazon basin, or the southeastern Chaco should plan for dengue exposure.

What Travelers Should Do

There is no malaria-style prophylaxis for dengue. Prevention is bite avoidance, which differs from malaria in one important way: Aedes aegypti bites primarily in the day, especially mid-morning and late afternoon. Apply repellent before leaving the hotel in the morning, not just at dusk.

Symptoms start 4 to 14 days after a bite and include high fever (often >39 C), severe headache (especially behind the eyes), muscle and joint pain ("breakbone fever"), nausea, and a characteristic rash on days 3 to 5. Most cases are self-limited. The warning signs of severe dengue, which usually appear as the fever breaks, include severe abdominal pain, persistent vomiting, gum or nose bleeding, fatigue/restlessness, and difficulty breathing. Severe dengue is a medical emergency.

The Qdenga vaccine (Takeda) is approved in some countries for residents of endemic areas but is not recommended for US travelers as of the latest ACIP guidance. Dengvaxia (Sanofi) is only approved for travelers age 9-16 with laboratory-confirmed prior dengue infection.

Wandr's pre-trip health check helps you identify which dengue prevention steps fit your specific Bolivia itinerary. Read our complete Dengue Fever guide.

Chagas Disease: The Risk Most Bolivia Travelers Underestimate

Bolivia has one of the highest Chagas disease prevalence rates in the world. In 2006, the national prevalence among the general population was estimated at 6.8%. In some rural southern villages, age-adjusted prevalence reaches 40 to 80%. The southern Bolivian Chaco (Tarija, southern Santa Cruz, Chuquisaca) has the highest concentration of Triatoma infestans, the kissing-bug vector that transmits Trypanosoma cruzi.

Why Travelers Often Miss This Risk

Chagas is rarely on a US traveler's radar because acute symptoms are mild or absent. The bug bites at night, typically while the traveler is asleep, and the parasite enters through the bite wound when the bug defecates on the skin and the host scratches. Decades later, 20 to 30 percent of infected individuals develop cardiomyopathy, megacolon, or megaesophagus. By the time the cardiac complications appear, the traveler has long forgotten the trip.

The traveler population at highest risk is anyone sleeping in rural mud-brick or adobe housing in the southern Chaco, the Yungas valleys, or rural lowland Cochabamba/Santa Cruz. Short-term tourists staying in hotels in La Paz, Uyuni, Lake Titicaca, or Sucre are at extremely low risk. Volunteers, missionaries, anthropology students, Peace Corps trainees, and adventure travelers in remote rural settings are at the highest risk.

Prevention

There is no Chagas vaccine. Prevention is housing-based: avoid sleeping in unscreened mud-brick or adobe rural homes, use a permethrin-treated bednet if you must, and inspect your sleeping area for kissing bugs (large, brown, leaf-shaped bugs the size of a US penny). Modern hotels and tourist lodges are not the high-risk environment.

Travelers concerned about possible exposure (long rural stay, recurrent bites, hosts with known Chagas) can request Chagas serology testing after returning home. Early-stage treatment with benznidazole or nifurtimox is most effective in the acute phase and in children, but adult chronic-phase treatment also reduces cardiac progression. I order Chagas serology in returning Bolivia travelers more often than people realize is necessary, and Bolivia is the destination where I have the highest pre-test probability.

Traveler's Diarrhea: Your Most Likely Health Problem

The single most common health issue for Bolivia travelers is traveler's diarrhea (TD). Roughly 30 to 40 percent of travelers to Bolivia experience at least one episode, and the rate climbs higher for travelers who eat at street stalls and rural markets.

The Andean and Amazon regions have a mixed bacterial pathogen profile: enterotoxigenic E. coli (ETEC), Campylobacter, Salmonella, and Shigella are all common. For the Andes, azithromycin is the better first-line antibiotic because Campylobacter is increasingly fluoroquinolone-resistant. In the Amazon basin, ciprofloxacin still works for most pathogens. The CDC recommendation for self-treatment is a single 1,000 mg dose of azithromycin or a three-day course of 500 mg daily, taken at the onset of moderate to severe diarrhea.

For prevention: bottled or boiled water only, no ice in drinks, peeled or cooked fruit, no raw vegetables outside reputable restaurants, no unpasteurized dairy or fresh cheeses outside major hotels. Oral rehydration salts are essential. Loperamide (Imodium) is reasonable for moderate symptoms but should be avoided if fever or bloody stools are present.

Wandr's clinicians prescribe azithromycin or ciprofloxacin for your specific Bolivia itinerary. The prescription is called in to your local pharmacy before you fly. Get a traveler's diarrhea kit for Bolivia. Read Cipro vs Azithromycin.

Rabies in Bolivia: When Pre-Exposure Makes Sense

Bolivia is canine-rabies endemic, with ongoing transmission in urban and rural areas. The country reports roughly 100-200 confirmed animal rabies cases per year, and human rabies cases continue to occur, primarily after dog bites in rural Cochabamba, Santa Cruz, and the Chaco.

The rabies pre-exposure vaccine series (now a 2-dose schedule on day 0 and day 7, per the WHO 2018 update and ACIP 2022 endorsement) is recommended for travelers with elevated exposure risk: long-stay travelers (4+ weeks rural), volunteers, missionaries, veterinary or animal-handling roles, bat exposure (Amazon lodges), bicycle tourists, motorcyclists, and rural children. A pre-exposure series does not eliminate the need for post-exposure treatment after a bite, but it does eliminate the requirement for rabies immune globulin (RIG), which is essentially unavailable in rural Bolivia. RIG availability is the single most important reason to consider pre-exposure prophylaxis for high-risk Bolivia travelers.

Wandr books rabies pre-exposure prophylaxis at a partner pharmacy near you. Pick a Walgreens location and time; the pharmacist administers the vaccine on-site. Book rabies pre-exposure for Bolivia. Read our Rabies Vaccine Guide.

Routine and Recommended Vaccines for Bolivia

In addition to yellow fever and rabies, the CDC recommends or considers the following vaccines for Bolivia travelers.

Hepatitis A. Recommended for nearly every Bolivia traveler. Single pre-departure dose offers approximately 95% protection. Hep A is fecal-oral transmitted, common across Bolivia, and the most cost-effective vaccine for the destination.

Typhoid. Recommended for most travelers, particularly those eating outside major hotels, traveling rurally, visiting friends/relatives, or staying longer than 2 weeks. Injectable (Typhim Vi) lasts 2 years; oral (Vivotif, Ty21a) lasts 5 years.

Hepatitis B. ACIP 2022 universal-adult recommendation; recommended for all travelers under 60 not previously vaccinated. Three-dose series, or two-dose Heplisav-B, or accelerated Twinrix.

Tdap. Required routine vaccine; if more than 10 years since your last booster, get a Tdap before you fly.

MMR. Bolivia, like much of South America, has had measles importations in 2024-2026. Verify two-dose MMR or a positive measles IgG titer. The 2026 measles surge has put MMR at the top of the routine-vaccine list for international travel.

Polio. WHO continues to recommend a single adult polio booster for travelers to risk-endemic countries; Bolivia is currently in the "states not at risk" category but neighboring Brazil and Ecuador are under monitoring. A booster within the past 10 years is sufficient.

Influenza. Bolivia's flu season runs April-September (Southern Hemisphere). Travelers should be current on the season-appropriate vaccine.

COVID-19. Stay current per CDC.

Wandr books all routine and travel vaccines at a partner pharmacy near you. Pick a Walgreens location and time; the pharmacist administers your travel vaccines on-site. Book Bolivia vaccines.

Regional Breakdown: Tailoring Your Health Plan to Your Itinerary

La Paz, El Alto, and the Altiplano (3,300-4,100 m)

Dominant risk: altitude. Secondary risk: traveler's diarrhea. No malaria, no yellow fever requirement, very low dengue risk. Plan for Diamox starting 1-2 days before arrival, hydration, and a low-exertion first 48 hours. Hep A and typhoid recommended.

Salar de Uyuni and the Southwest Circuit (3,656-5,000+ m)

Dominant risk: altitude. Tours often cross passes above 5,000 meters in 4WDs. Multi-day Uyuni tours sleep at 4,200-4,500 meters in basic refugios. Pre-treat with Diamox. Carry rescue medication (dexamethasone for severe AMS/HACE, nifedipine for HAPE) if your guide does not. Bring layers and a sleeping bag rated to -10 C.

Lake Titicaca and Copacabana (3,812-3,950 m)

Dominant risk: altitude. Day-trip from La Paz exposes travelers to higher elevation than the city. Hep A and traveler's diarrhea risk on local food. No yellow fever requirement.

Sucre and Cochabamba (2,558-2,810 m)

Dominant risk: dengue (Cochabamba), traveler's diarrhea. Mild altitude exposure (most travelers tolerate without medication). Hep A and typhoid recommended.

Santa Cruz and Amazon Lowlands (200-500 m)

Dominant risk: malaria (in some areas), dengue, yellow fever (vaccine required by CDC), traveler's diarrhea. No altitude concern. Add yellow fever vaccine 10+ days before departure. Add Malarone/doxy for Rurrenabaque, Madidi, Pampas, Beni, Pando.

Southern Chaco and Yungas

Dominant risk: malaria (some areas), Chagas (rural housing), dengue, traveler's diarrhea, yellow fever (vaccine required). Adventure and Peace Corps travelers, take Chagas exposure seriously.

What Your ER Doctor Wants You to Pack

A short list of what I send Bolivia patients home with as physical or printed items.

• Acetazolamide (Diamox) 125 mg, take 1 tab twice daily, start 24 hours before ascent and continue for 48 hours at altitude
• Azithromycin 500 mg, 3 tabs, for self-treatment of moderate-to-severe traveler's diarrhea
• Ondansetron 4 mg sublingual, for nausea (altitude or food-related), 8-12 doses
• Loperamide 2 mg, 12 tabs, for mild diarrhea without fever or blood
• Oral rehydration salts (Drip-Drop, Liquid I.V., or generic ORS packets), 10 packets
• A small course of dexamethasone 4 mg tabs, 6 tabs, for emergency HACE rescue (use only if descent is delayed)
• DEET 20-30% or picaridin 20% repellent
• Sunscreen SPF 50+ (UV index at altitude is 2-3x sea level)
• A pulse oximeter (very useful at altitude; targets >88% saturation in La Paz, >85% at Uyuni)
• A printed copy of your yellow fever certificate if relevant
• A copy of your vaccine records and prescription list

Wandr's pre-trip health check builds your personalized Bolivia kit in under 5 minutes. Get prescriptions for altitude, traveler's diarrhea, and anti-nausea sent to your local pharmacy before you fly. Start your Bolivia pre-trip health check.

What Wandr Does for Your Bolivia Trip

Wandr is a physician-founded travel health platform built for trips exactly like Bolivia: high-altitude, multi-region itineraries with stacked risks. Here is what we handle.

For prescription medications (Diamox, Malarone, doxycycline, azithromycin, ondansetron, dexamethasone): you complete a 5-minute online health questionnaire. Our clinicians review your itinerary and medical history, then call the prescription in to your local pharmacy for pickup. Most travelers receive their prescriptions within 24 hours.

For vaccines (hepatitis A, typhoid, hepatitis B, rabies pre-exposure, MMR, Tdap, polio, influenza): you pick a partner pharmacy (Walgreens), date, and time on travelwithwandr.com, and we book the appointment. The pharmacist administers your travel vaccines on-site, no separate doctor visit required.

For yellow fever specifically: yellow fever vaccine must be given at a CDC-designated US YFV center with the yellow card stamped on-site. We do not book yellow fever; for that, find your nearest CDC-authorized yellow fever clinic 10+ days before departure. We handle every other vaccine you'll need for Bolivia.

Typical Bolivia traveler savings vs traditional travel clinic: $200-$400 in consultation fees, plus the time and inconvenience of a separate clinic visit.

Frequently Asked Questions

Do I need yellow fever vaccine for Bolivia?

If you are arriving from a yellow-fever-risk country (most of tropical South America, much of sub-Saharan Africa), Bolivia legally requires proof of yellow fever vaccination for travelers aged 1 year and older. If you are arriving directly from the US with no other yellow-fever countries on your itinerary, you are not legally required to have it. The CDC recommends yellow fever vaccine for travelers visiting areas below 2,300 meters east of the Andes (Beni, Pando, Santa Cruz, parts of Chuquisaca, Cochabamba, La Paz, and Tarija) regardless of your point of origin. The vaccine takes 10 days to be valid by international standards.

Will I get altitude sickness in La Paz?

Probably yes if you do not pre-treat. La Paz sits at 3,640 meters and El Alto Airport at 4,061 meters. At altitudes above 3,000 meters, 40 to 50 percent of unacclimatized travelers develop acute mountain sickness within 12 hours of arrival. Pre-treating with acetazolamide (Diamox) starting 24 hours before ascent cuts the risk approximately in half. Most travelers I prescribe Diamox to for a La Paz arrival have mild or no symptoms.

How early should I start Diamox for Bolivia?

Start acetazolamide (Diamox) 24 hours before your flight to La Paz at 125 mg twice daily, continue for the first 48 hours at altitude, and then taper or stop if you are feeling well. For multi-day Uyuni circuits that climb to 5,000 meters, continue Diamox throughout. For longer Bolivia trips, plan to take Diamox during the first 3-4 days and again for any ascent above 4,000 meters.

Do I need malaria pills for Bolivia?

It depends on your itinerary. If you are staying in La Paz, Uyuni, Lake Titicaca, Sucre, or Cochabamba, no malaria prophylaxis is needed. If you are going to Rurrenabaque, Madidi National Park, the Pampas, Beni, Pando, or rural lowland Santa Cruz, yes. CDC-approved options are atovaquone-proguanil (Malarone), doxycycline, or mefloquine. Bolivian malaria is 99% P. vivax, so a returning traveler who develops malaria may need additional treatment (tafenoquine or primaquine) to clear dormant liver parasites.

Is the water safe to drink in Bolivia?

No. Drink only bottled, filtered, or boiled water throughout Bolivia, including in La Paz and major cities. Avoid ice in drinks unless made from filtered water (most reputable hotels and restaurants do, but ask). Use bottled water for tooth brushing in budget accommodations. Carry oral rehydration salts and a course of azithromycin in case you develop traveler's diarrhea.

What is Chagas disease and should I be worried?

Chagas disease is a parasitic infection (Trypanosoma cruzi) transmitted by kissing bugs (Triatoma infestans), and Bolivia has one of the highest prevalence rates in the world. Most tourists staying in hotels in major cities are at extremely low risk. The travelers at meaningful risk are those sleeping in rural mud-brick or adobe housing in the southern Chaco, Yungas valleys, or rural lowlands for extended periods, typically volunteers, Peace Corps trainees, missionaries, or adventure travelers. There is no vaccine. Prevention is avoiding rural unscreened housing and using a permethrin-treated bednet if you must sleep in one.

Can I get dengue in La Paz?

Historically no, but the geography is shifting. Aedes aegypti (the dengue vector) has expanded into Andean valleys and now reaches altitudes up to 2,700 meters. Cochabamba (2,558 m) had its largest-ever dengue outbreak in 2024. La Paz at 3,640 meters remains low-risk, but Cochabamba, Sucre, and lower elevations of the La Paz department are now considered dengue-transmission zones. Apply repellent during daytime hours, especially mid-morning and late afternoon when Aedes aegypti is most active.

Do I need rabies vaccine for Bolivia?

For typical tourist travel through major cities, no. For longer rural stays (4+ weeks), volunteer or veterinary work, motorcyclists, bicycle tourists, or Amazon-lodge travelers with bat exposure, yes. Bolivia is canine-rabies endemic and rabies immune globulin is essentially unavailable in rural areas. Pre-exposure rabies vaccination eliminates the need for RIG after a bite, which is the most important practical reason to consider it.

What is the best altitude medication for Bolivia?

Acetazolamide (Diamox) at 125 mg twice daily, started 24 hours before ascent, is the standard. Dexamethasone is a rescue medication for severe AMS or HACE, not a routine prophylactic. Ibuprofen helps with altitude headache. Avoid alcohol and sleeping pills (especially benzodiazepines) at altitude. If you have a sulfa allergy, dexamethasone can be used for prophylaxis under clinician supervision; over-the-counter ginkgo biloba has mixed evidence and is not a substitute for Diamox.

When is the best time to visit Bolivia for health reasons?

May through September is dry season in the Bolivian Andes and the best window for trekking and high-altitude tourism. November through March is wet season, which is also peak dengue transmission across the lowlands. Yellow fever risk and Chagas risk are present year-round. Most travelers find May through October the most health-friendly window: dry, cooler nights at altitude, lower dengue risk, peak salt-flat photography (May-November dry season; flooded mirror effect December-April).

Sources and Medical References

• CDC Yellow Book 2026 — Yellow Fever Vaccine and Malaria Prevention Information by Country: Bolivia. (ncbi.nlm.nih.gov/books/NBK620965/)
• CDC Travelers' Health — Bolivia destination page. (wwwnc.cdc.gov/travel/destinations/traveler/none/bolivia)
• PAHO/WHO Dengue Epidemiological Situation in the Region of the Americas — Epidemiological Week 48, 2025.
• PAHO 2025 alert: Increased risk of dengue outbreaks due to DENV-3 circulation.
• WHO/PAHO Chagas Disease Topics: Prevalence and Burden in the Americas.
• Hackett & Roach, Wilderness & Environmental Medicine, "Acute Mountain Sickness and HAPE Prevention in the Andes."
• High Altitude Pulmonary Edema, High Altitude Cerebral Edema, and Acute Mountain Sickness — La Paz, Bolivia 3,500m perspective (PubMed, 2022).
• Virology Journal (2026): Emergence of dengue at high altitude — characterization of the 2024 outbreak in Cochabamba, Bolivia.
• ACIP and CDC ACIP recommendations for rabies pre-exposure (2022 updated 2-dose schedule).
• WHO 2018 Rabies Position Paper.

Medical Disclaimer

This guide is for educational purposes and does not substitute for individualized medical advice. Travelers with chronic conditions (cardiac disease, pulmonary disease, sickle cell, pregnancy, immunocompromise) should consult a clinician before high-altitude travel to Bolivia. Acetazolamide should not be taken by travelers with documented sulfa allergy without clinician guidance. Mefloquine is contraindicated in travelers with a history of seizures or psychiatric disease. This article reflects guidance current as of May 2026; CDC and PAHO recommendations may change.

Build Your Bolivia Health Plan in Under 5 Minutes

Bolivia is one of the highest-stakes destinations a US traveler can choose for health risk. Altitude is universal, malaria is geographic, dengue is now altitude-expanded, yellow fever has dual rules, and Chagas is a quiet long-term risk for the wrong itinerary. The good news is that every one of these is manageable with the right pre-trip plan.

Start your free Bolivia pre-trip health check — our clinicians review your specific itinerary and build your medication and vaccine list. Prescriptions are called in to your local pharmacy. Vaccines are booked at a partner pharmacy near you. Most travelers complete the whole process from sea level to ready-for-Bolivia in under a week.