Vaccinations & malaria in Zanzibar

Is a vaccination certificate required to enter?

Tanzania does not require a general vaccination certificate for all arrivals. The one certificate that is genuinely checked is yellow fever: if you are arriving from, or have transited through, a country with yellow fever risk (this includes several African and South American countries, and notably includes neighbouring Kenya for travellers combining a Kenya-Tanzania safari), you are required to carry a valid International Certificate of Vaccination showing yellow fever immunisation. Travellers arriving directly from Europe, North America, or similar non-endemic regions with no such transit typically aren't asked for one, but airline and immigration checks can vary, so carry the certificate if there's any doubt about your routing.

The yellow fever vaccine itself isn't suitable for everyone — it's generally not recommended for people aged 60 and over due to a higher risk of serious side effects, and there are other groups for whom a doctor may advise against it. This is exactly the kind of decision to make with a travel health professional rather than from a general guide like this one.

Malaria: present across almost all of Zanzibar and mainland Tanzania

Malaria risk is considered high across virtually all of Tanzania below about 1,800 metres elevation, which includes Zanzibar in its entirety as well as the Serengeti and most of the northern safari circuit. There is essentially no "malaria-free" lowland zone to plan around — the standard advice from travel health authorities is to take malaria prevention seriously regardless of exactly where on the island or the safari circuit you're staying.

Prevention generally comes in two parts, and most travel health guidance recommends doing both rather than relying on either alone:

• Antimalarial medication — commonly prescribed options include atovaquone/proguanil, doxycycline, or mefloquine, each with different dosing schedules, side-effect profiles, and suitability depending on your health history and other medications. This is a prescription decision for your doctor, not something to self-select from a blog post.
• Bite avoidance — mosquito nets (most hotels and lodges provide these), DEET or picaridin-based repellent reapplied as directed, long sleeves and trousers especially around dusk and dawn when the malaria-carrying mosquito species is most active, and air-conditioned or well-screened rooms where available.

If you develop a fever of 38°C (100°F) or higher during your trip, or within a year of returning home, seek medical care promptly and mention that you've been in a malaria-risk area — malaria can present later than travellers expect, and treating it early matters.

Other vaccinations commonly recommended for the region

Beyond the yellow fever question, health authorities and travel clinics commonly discuss the following for travel to Tanzania and Zanzibar as part of routine pre-trip health prep — again, discuss relevance to your own situation with a clinician rather than treating this as a checklist to complete unassisted:

• Hepatitis A — transmitted through contaminated food or water
• Typhoid — also food- and water-borne, more relevant if you plan to eat outside hotel and resort settings or visit rural areas
• Routine vaccines — many clinics check you're up to date on measles-mumps-rubella (MMR), tetanus-diphtheria-pertussis (Tdap), and polio as a matter of course for any international trip
• Rabies — sometimes discussed for travellers planning rural excursions, extended stays, or activities that bring them into closer contact with animals
• Hepatitis B, cholera, and others — relevance depends on your specific itinerary and personal risk factors

Practical health tips for your trip

• Water: stick to bottled or filtered water rather than tap water; most hotels provide it as standard.
• Sun and heat: Zanzibar's proximity to the equator means strong sun year-round — high-SPF sunscreen and hydration matter more than most visitors expect.
• Medical facilities: Zanzibar's medical facilities are more limited than what many visitors are used to at home. For anything beyond routine care, Dar es Salaam or your home country (via medical evacuation) generally offers a higher standard of care — which is part of why the mandatory travel insurance and a solid personal policy both matter.
• Prescription medication: bring enough for your full trip plus a buffer, in original packaging, along with a doctor's letter if you're carrying anything that could raise questions at customs.
• Pharmacies: reasonably well-stocked in Stone Town and larger resort areas, though always check expiry dates.

Timing your health prep against your travel date

Timing before travel	What to do
4–6 weeks out	Book a travel health consultation; some vaccines need multiple doses spaced weeks apart, or need time to become fully effective
2–3 weeks out	Complete any remaining vaccine doses; start antimalarial medication if your prescribed regimen requires starting before departure (some do, some don't — this varies by drug)
1 week out	Confirm you have enough medication for the full trip plus a buffer, pack a basic health kit, and check your mandatory insurance and any personal policy are both arranged
During travel	Continue antimalarial dosing exactly as prescribed, including any period after your return that your specific medication requires

Other mosquito-borne and regional illnesses worth knowing about

Malaria gets most of the attention, reasonably, but mosquitoes in this region can also transmit other illnesses such as dengue fever and, less commonly, chikungunya — neither has a widely available vaccine for general travellers, so the same bite-avoidance measures that reduce malaria risk (repellent, covering up, nets, screened rooms) are also your main defence against these. If you develop fever, joint pain, or a rash after your trip, mention your travel history to whoever treats you, since these illnesses aren't always the first thing a clinician unfamiliar with your itinerary would consider.

Building a basic travel health kit

• Any prescribed antimalarial medication, in original packaging, for the full trip plus several days' buffer
• DEET or picaridin-based insect repellent (a higher concentration is generally more effective, within the range your doctor or pharmacist recommends)
• A basic first-aid kit — plasters, antiseptic, any regular personal medication
• Rehydration salts, useful for heat, sun exposure, or a stomach upset
• A general anti-diarrhoeal and mild pain relief, discussed with your pharmacist in advance
• High-SPF, broad-spectrum sunscreen — the equatorial sun is stronger than most visitors expect, year-round
• A copy of any relevant medical history or prescriptions, particularly useful if you need care locally and don't have your usual doctor to consult

Food and water safety in practice

Most hotels and resorts serve safe, well-prepared food and provide bottled or filtered water as standard, and the vast majority of visitors have no issues at all. A few general precautions reduce risk further: stick to bottled or known-filtered water (including for brushing teeth, if you want to be cautious), be selective about street food based on how busy and freshly-prepared it looks, and be a little more cautious with raw seafood, unpeeled fruit, and ice from unclear sources when eating outside your hotel. None of this should stop you enjoying Zanzibar's food scene — see our Zanzibar food guide for what to actually try — it's simply sensible general practice for the region.

What if you get sick during your trip

For anything beyond a minor issue, most hotels and resorts can point you to a reputable local clinic or doctor, and your tour operator (if you're travelling with one) should also be able to help coordinate this. For genuinely serious concerns, Zanzibar's more limited medical infrastructure means evacuation to Dar es Salaam, Nairobi, or further afield is sometimes the appropriate next step — which is exactly the scenario your travel insurance, both the mandatory local policy and a comprehensive personal one, is there for. Don't wait to seek care if you develop a high fever, especially after any period in a malaria-risk area — early treatment matters.

Quick answers

Do I need a yellow fever vaccine to visit Zanzibar?

Only if you're arriving from, or transiting through, a country with yellow fever risk. Direct arrivals from non-endemic regions typically aren't required to show a certificate, but always confirm for your specific routing.

Is malaria a real risk on the island, or just the mainland?

It's a real risk across virtually all of Zanzibar as well as the mainland safari circuit — there isn't a meaningfully malaria-free zone to plan around.

Can I get vaccinated after I arrive in Zanzibar?

Some travel clinics exist locally, but the standard advice is to complete any needed vaccinations at home, ideally 4–6 weeks before departure, since some vaccines take time to become effective.

Do children need different malaria prevention?

Yes — dosing is based on body weight and not every antimalarial is suitable for children, so this needs a paediatrician's input specifically.

Is it safe to visit Zanzibar while pregnant?

This is a decision to make with your obstetrician, since some antimalarials aren't recommended in pregnancy and malaria itself carries elevated risk in pregnancy — get personalised advice well before booking.

Are mosquito nets provided at hotels?

Most established hotels and lodges provide them or have screened, air-conditioned rooms — worth confirming with your specific property if it's a smaller or more remote guesthouse.

Health prep for a combined Zanzibar and Serengeti trip

Travellers combining a Zanzibar beach stay with a fly-in safari sometimes assume the safari portion is a separate health-planning exercise from the island portion — in practice, the core advice (malaria prevention, sun protection, water caution, general travel health kit) applies continuously across both, since malaria risk exists across essentially the whole itinerary at the elevations most safari camps and Zanzibar itself sit at. A few safari-specific additions are worth discussing with your travel health provider on top of the general Zanzibar advice above:

• Dust exposure on game drives, which can aggravate respiratory sensitivities for some travellers
• Extended time outdoors during peak mosquito activity hours (dusk and dawn game drives), which increases the practical importance of repellent and covering up during those specific windows
• Limited medical facilities at remote safari camps compared to Zanzibar's resort areas, reinforcing the value of comprehensive evacuation-inclusive insurance for this leg of the trip specifically

Where to get reliable, current guidance

Because health guidance is genuinely time-sensitive and personal, the most reliable sources for your specific situation are a registered travel health clinic or your own doctor, rather than any general guide, including this one. National travel health bodies (such as the CDC in the United States, or NaTHNaC/TravelHealthPro in the United Kingdom) publish free, regularly updated, country-specific guidance that's a good starting point for the conversation with your own clinician.