Travel Health Guide: Tanzania (Kilimanjaro, Zanzibar & Safari)
Heading to Tanzania? A physician breaks down the malaria medications, vaccines, and altitude prep you actually need for Kilimanjaro, the Serengeti, and Zanzibar.
Travel Health Guide: Tanzania (Kilimanjaro, Zanzibar & Safari)
Travelers to Tanzania need malaria prophylaxis, several vaccines, and — if climbing Kilimanjaro — a plan for altitude sickness. According to the CDC, malaria transmission occurs throughout Tanzania year-round, with risk in all regions including Zanzibar and the Serengeti. Yellow fever vaccination is required for entry if you're arriving from a yellow fever-endemic country, and it's recommended for most travelers regardless. The two most effective antimalarials for Tanzania are atovaquone-proguanil (Malarone) and doxycycline, both of which require a prescription. Kilimanjaro reaches 5,895 meters (19,341 feet), making altitude sickness prevention with acetazolamide (Diamox) standard practice for summit attempts. In short: Tanzania is a remarkable destination that requires real medical preparation. Here's exactly what you need.
Quick Facts
Overview
Tanzania is one of the most extraordinary travel destinations on the planet. The Serengeti hosts the largest wildlife migration in the world. Kilimanjaro is the highest peak in Africa. Zanzibar's coral reefs, white sand beaches, and spice markets make it a destination unto itself. But Tanzania also sits squarely in sub-Saharan Africa's malaria belt, with year-round transmission including in the popular Zanzibar archipelago.
As a physician, I want to be clear: Tanzania is completely safe to visit with proper preparation. The travelers I've seen in the ER with serious complications were almost universally those who skipped their antimalarials or assumed they didn't need vaccines because they "felt healthy." The preparation isn't complicated. It just has to happen.
The other thing Tanzania demands is altitude awareness. Kilimanjaro is a non-technical climb, meaning no ropes or specialized gear, but it ascends faster than most bodies can acclimatize. Acute mountain sickness (AMS) affects an estimated 75% of climbers who attempt summit routes without proper altitude medication or acclimatization time. Diamox makes a significant difference.
Malaria Prevention: What You Need to Know
Malaria is present throughout Tanzania at all elevations below 1,800 meters, year-round. That includes Dar es Salaam, the Serengeti, Ngorongoro Crater, and all of Zanzibar. Risk is highest during and just after the rainy seasons (March to May and November to December), but transmission occurs in dry months too.
The Plasmodium falciparum parasite dominates in Tanzania. This is the most dangerous malaria species — it progresses faster and can become life-threatening within 24-48 hours if untreated. This is not a destination where you skip malaria prevention.
Choosing Your Antimalarial
Two medications are first-line for Tanzania: atovaquone-proguanil (Malarone) and doxycycline.
Malarone is the preferred choice for most travelers. It starts 1-2 days before arrival, continues through your trip, and stops 7 days after leaving Tanzania. Side effects are generally mild (nausea, headache), and it's taken once daily with food. It's more expensive than doxycycline, but the short post-trip course and minimal side effect profile make it the top pick for most people.
Doxycycline is a good lower-cost option. It's taken once daily starting 2 days before arrival and continues for 4 weeks after leaving Tanzania. The tradeoff: sun sensitivity (you can burn badly, which matters on safari) and GI upset if not taken with food. It also increases yeast infection risk in women.
Mefloquine (Lariam) is used in some regions but is not recommended for Tanzania due to widespread resistance and a higher side effect profile.
A comparison of the two main options:
CTA: Get your Tanzania malaria prescription shipped before you leave. Start your visit at Wandr — a physician reviews your request within 24 hours.
Yellow Fever: Required and Recommended
Tanzania requires proof of yellow fever vaccination if you are arriving from a country with risk of yellow fever transmission. This includes most of Central and West Africa, and parts of South America. If you're connecting through one of these countries, even briefly, you may be required to show your yellow card at the Tanzanian border.
Beyond the entry requirement, the CDC recommends yellow fever vaccination for all travelers to Tanzania, including those not arriving from endemic countries. The vaccine is over 95% effective, provides lifelong protection after a single dose, and has been available for decades with an excellent safety record.
The yellow fever vaccine is administered as a live attenuated virus, which means it cannot be given during pregnancy or to people with certain immune conditions. If that applies to you, talk to your physician before travel.
Important note: The yellow fever vaccine must be administered at least 10 days before travel to be valid for entry. If your departure is close, book your vaccine immediately.
CTA: Book your yellow fever vaccine online through Wandr's vaccine scheduling — no phone calls, no hunting for clinic availability.
Other Vaccines to Review Before Tanzania
Typhoid
Typhoid fever is transmitted through contaminated food and water. Tanzania, particularly outside of upscale lodges and hotels, carries real typhoid risk. The oral vaccine (Vivotif) is taken as 4 capsules over 7 days and provides 5 years of protection. The injectable vaccine (Typhim Vi) is a single shot with 2 years of protection. Both require time before travel to be effective — the oral vaccine needs to be completed at least 1 week before departure.
Hepatitis A
Hepatitis A is transmitted through contaminated food or water. Tanzania has an elevated hepatitis A risk, and the vaccine is strongly recommended. The standard schedule is two doses: the first given before travel, a booster 6-12 months later. The initial dose provides strong protection within 2 weeks. If you've had hepatitis A before or are already vaccinated, you're covered.
Hepatitis B
Transmitted through blood, unsterilized medical equipment, and sexual contact. The standard series is 3 doses over 6 months, but accelerated schedules are available if time is short. Tanzania is considered moderate-to-high risk for hepatitis B exposure.
Rabies
Tanzania has a high dog-to-human rabies transmission rate, and wildlife encounters on safari create additional exposure risk. Pre-exposure rabies vaccine (3 doses) is recommended if you're staying longer than a month, working with animals, doing research in rural areas, or planning adventure activities. It doesn't eliminate the need for post-exposure treatment, but it simplifies the protocol significantly and buys critical time in a country where post-exposure immunoglobulin (HRIG) can be hard to source.
Meningococcal
Recommended for travelers to the "meningitis belt" of sub-Saharan Africa, which includes northern Tanzania. The ACWY vaccine covers the most common strains.
Routine Vaccines to Verify
Before any international travel, confirm you're current on: MMR (measles-mumps-rubella), tetanus/diphtheria/pertussis (Tdap), and COVID-19 (per current CDC guidance). Measles outbreaks occur in East Africa; verify your MMR is up to date.
Kilimanjaro: Altitude Sickness Prevention
Kilimanjaro rises from 1,800 meters at its base to 5,895 meters at Uhuru Peak. The most popular summit routes (Machame, Marangu, Lemosho) take 6-9 days. Even on the longer routes, the ascent is rapid enough that a significant percentage of climbers experience altitude sickness.
Who Gets Altitude Sickness
Acute mountain sickness (AMS) does not discriminate by fitness level. Athletes and sedentary travelers are equally susceptible. AMS typically begins at elevations above 2,500 meters and progresses predictably: headache first, then fatigue, nausea, dizziness, and sleep disruption. In severe cases, it progresses to High Altitude Pulmonary Edema (HAPE) or High Altitude Cerebral Edema (HACE), both of which are life-threatening emergencies.
Acetazolamide (Diamox) for Kilimanjaro
Acetazolamide (Diamox) is the standard preventive medication for altitude sickness. According to a Cochrane review of clinical trials, acetazolamide at 250 mg twice daily significantly reduces the incidence and severity of AMS. The standard dosing protocol for Kilimanjaro:
- Dose: 125-250 mg twice daily (I typically recommend starting at 125 mg twice daily to reduce side effects)
- Start: 24 hours before ascending above 2,500 meters
- Continue: Until you've been at maximum elevation for 2 days or until descent
- Common side effects: Increased urination, tingling in fingers and toes, carbonated beverages taste flat
- Contraindications: Sulfa antibiotic allergy, kidney stones, first trimester pregnancy
The tingling (paresthesias) side effect is benign and does not require stopping the medication. Increased urination is expected and actually represents the mechanism of action — stay well hydrated.
Note: Diamox is not a substitute for proper acclimatization. Choosing a longer route (Lemosho over Marangu) gives your body more time to adapt at intermediate elevations. Medication and acclimatization work together.
CTA: Get your Diamox prescription before your Kilimanjaro climb. Wandr's online physicians can review and prescribe within 24 hours.
Traveler's Diarrhea in Tanzania
Traveler's diarrhea affects approximately 20-60% of travelers to East Africa, depending on accommodation type and food choices. Tanzania, particularly in street food settings and local restaurants, carries significant contamination risk.
Prevention
The most effective prevention strategies:
- Drink only bottled or properly purified water (boiled or treated with iodine/chlorine)
- Avoid ice in drinks at non-tourist establishments
- Eat food that is cooked and served hot
- Avoid raw fruits and vegetables you haven't peeled yourself
- Hand hygiene: alcohol-based hand sanitizer before eating
Treatment: Standby Antibiotics
Most physicians recommend bringing a standby antibiotic for Tanzania given the risk level and the remote nature of many itineraries. Azithromycin is the first-line antibiotic for Tanzania due to high rates of quinolone-resistant Campylobacter in East Africa (meaning ciprofloxacin is less reliable here than in other regions). Dose: 1,000 mg once (or 500 mg daily for 3 days for moderate illness).
Also bring loperamide (Imodium) for symptomatic control, and an oral rehydration solution (ORS) for rehydration.
Seek immediate medical attention for: bloody diarrhea, fever above 38.5°C (101.3°F), or diarrhea lasting more than 72 hours.
Other Health Hazards in Tanzania
Dengue
Dengue fever is transmitted by Aedes mosquitoes, which bite during the day — unlike malaria mosquitoes, which are primarily active at dusk and dawn. There is no vaccine or preventive medication for dengue. Prevention is physical: DEET-based insect repellent (at least 20%), long sleeves and pants during high-mosquito times, permethrin-treated clothing.
Schistosomiasis
Fresh water in Tanzania (rivers, Lake Victoria, Lake Tanganyika) can harbor the Schistosoma parasites that cause schistosomiasis. Avoid swimming in fresh water. Seawater (including in Zanzibar) and chlorinated pools are safe.
Insect and Animal Exposure
Safari carries low but real risk of insect and animal bites. Wear closed-toe shoes at camp, use DEET-based repellent, and don't approach wildlife on foot outside of designated walking safaris with guides. If bitten by an animal, seek medical attention immediately — post-exposure rabies protocols require time-sensitive treatment.
Zanzibar: A Different Risk Profile
Zanzibar is part of Tanzania but deserves a separate note. The islands of Zanzibar (Unguja and Pemba) carry year-round malaria risk and require the same antimalarial prophylaxis as the mainland. Yellow fever requirements apply equally. However, the main risks in Zanzibar shift somewhat:
- Malaria remains the top concern
- Dengue is present and has caused outbreaks in recent years
- Marine hazards (coral cuts, sea urchins) are common — bring antiseptic
- Hepatitis A risk from local food
If your Tanzania itinerary includes Zanzibar, your malaria medication, vaccines, and other prep remain the same as for mainland Tanzania.
Travel Insurance for Tanzania
Travel insurance is not optional for Tanzania — it's a necessity. Medical evacuation from the Serengeti or from high altitude on Kilimanjaro can cost $30,000-$80,000 or more. Few US health insurance plans cover international care, and none cover medical evacuation. The standard recommendation is comprehensive travel insurance that includes:
- Emergency medical coverage (minimum $100,000)
- Medical evacuation (minimum $250,000)
- Trip cancellation/interruption
Policies that specifically include "adventure sports" coverage are important for Kilimanjaro climbers, as some standard policies exclude high-altitude trekking.
CTA: Compare and book travel insurance through Wandr — we've vetted plans that cover Tanzania's specific risks.
Tanzania Health Prep Timeline
What to Pack: Tanzania Health Checklist
- Antimalarial medication (prescription required)
- Acetazolamide / Diamox if climbing Kilimanjaro
- Standby antibiotic (azithromycin) for traveler's diarrhea
- Loperamide (Imodium) for symptomatic diarrhea relief
- Oral rehydration salts
- DEET insect repellent (30-50% concentration)
- Permethrin spray for treating clothing and gear
- Sleep net (if staying in non-air-conditioned lodging)
- SPF 50+ sunscreen (doubles as sun protection at altitude)
- Antiseptic wound care kit
- Personal hand sanitizer
- Yellow fever vaccination card
- Copies of all prescriptions
- Travel insurance documentation with emergency contact number
FAQ: Tanzania Travel Health
Do I need malaria pills for Tanzania? Yes. The CDC recommends malaria prophylaxis for all travelers to Tanzania, including Zanzibar, year-round. Malaria transmission occurs throughout the country, and the dominant parasite (P. falciparum) is the most dangerous strain. Atovaquone-proguanil (Malarone) and doxycycline are the most commonly prescribed options.
What vaccines are required for Tanzania? Yellow fever vaccination is required for entry if you're arriving from or transiting through a yellow fever-endemic country. Beyond that entry requirement, the CDC strongly recommends yellow fever for all visitors, plus typhoid, hepatitis A, and hepatitis B. Review your routine vaccines (MMR, Tdap) before travel as well.
Do I need altitude medication for Kilimanjaro? Acetazolamide (Diamox) is standard for Kilimanjaro climbers. A 2012 Cochrane review found acetazolamide significantly reduces both the incidence and severity of acute mountain sickness. Start 24 hours before reaching 2,500 meters elevation and continue through your time at altitude.
Is Zanzibar safe to visit without malaria pills? No. Malaria risk is present year-round in Zanzibar, just as on the mainland. The same antimalarial medication used for mainland Tanzania is required.
How early before Tanzania do I need to start my vaccines? Ideally 8 weeks before departure. Yellow fever must be given at least 10 days before entry to be valid. Some vaccine series (hepatitis B) take 6 months to complete fully. Even if you have less time, see a physician immediately — most travelers can complete the most critical vaccines in 2-4 weeks.
Can I get a scopolamine patch or other motion sickness medication for the bush flights in Tanzania? Yes. Small bush planes between airstrips (Serengeti, Selous, Ruaha) are bumpy and can trigger motion sickness. Scopolamine patches and oral antihistamines are both options. A physician can prescribe scopolamine online before your trip.
Is the water safe to drink in Tanzania? No. Tap water in Tanzania is not safe to drink. Use bottled water for drinking and brushing teeth. Ice from non-reputable sources carries contamination risk.
What's the best way to avoid mosquito bites in Tanzania? DEET-based repellent (30-50% concentration) on exposed skin, permethrin-treated clothing, long sleeves and pants at dawn and dusk, and a bed net in non-air-conditioned lodging are the primary defenses. Your antimalarial medication adds a critical layer of pharmaceutical protection.
About the Author
This guide was written and reviewed by the Wandr Health physician team. Wandr Health was founded by an emergency medicine physician with firsthand experience treating travelers who arrived in the ER with preventable illnesses. Our clinical team reviews every prescription request and applies CDC and WHO guidelines to every traveler's individual health profile. This is what we'd tell our own family members heading to Tanzania.
Medical Disclaimer
This article is for informational purposes only and does not constitute individualized medical advice. Recommendations may vary based on your personal health history, medications, and travel itinerary. Consult a licensed physician before taking any prescription medication. Wandr Health's physicians are available online to review your specific situation and prescribe appropriate medications.
Sources
- Centers for Disease Control and Prevention. Tanzania Travel Health Information. https://wwwnc.cdc.gov/travel/destinations/traveler/none/tanzania
- World Health Organization. Malaria: Countries and Territories — Tanzania. https://www.who.int/data/gho/data/indicators
- Basnyat B, Gertsch JH, Johnson EW, Castro-Marin F, et al. Efficacy of low-dose acetazolamide (125 mg BID) for the prophylaxis of acute mountain sickness: a prospective, double-blind, randomized, placebo-controlled trial. High Altitude Medicine & Biology. 2003;4(1):45-52.
- Crockett M, Guay L, et al. Acetazolamide for preventing acute mountain sickness. Cochrane Database of Systematic Reviews. 2012.
- World Health Organization. International Travel and Health: Yellow Fever. https://www.who.int/ith/vaccines/yellowfever/en/
- Steffen R, Hill DR, DuPont HL. Traveler's diarrhea: a clinical review. JAMA. 2015;313(1):71-80.
Last Updated: April 25, 2026 Written by: Wandr Health Physician Team Pillar Page: Destination Health Hub