Malaria in Zanzibar: Risk, Protection & Prophylaxis

The Short Answer

Yes, Zanzibar is a malaria area, and it is year-round. The actual risk is considerably lower than on the Tanzanian mainland – but it is not zero. Consistent mosquito protection is therefore recommended without exception; preventive medication additionally, depending on the source and your personal situation. Which option suits you is decided by a travel or tropical medicine doctor. Not this article, and certainly not a forum.

Important Note

This text does not replace medical advice. Recommendations change and depend on your health, your medication, your route and when you travel. Plan an appointment at a travel medicine practice or a tropical institute about 4–6 weeks before departure, and check the current advice issued by your country's foreign ministry.

Why You Find Contradictory Answers Online

If you research beforehand, you come across two statements that seem to contradict each other: “year-round high risk” and “barely an issue on Zanzibar any more”. Both have their reasons – the sources are assessing different things.

The difference is methodological: country advisories assess in blanket terms at national level and are deliberately cautious – they have to hold for every kind of trip, from a mainland safari to a beach holiday. Travel medicine sources look at a smaller scale. Zanzibar has run intensive control programmes for years, and recorded case numbers are clearly below those of the mainland. For you that means: take the subject seriously, but don't let it spoil your anticipation.

Preventive Medication: What Is Usually Discussed

In travel medicine there are two basic approaches your doctor will discuss with you:

• Continuous prophylaxis – a medication you take before, during and after the trip on a fixed schedule.
• Standby emergency self-treatment – you only carry a medication with you and use it solely if medical help cannot be reached in time.

Which approach is recommended depends on your route: someone staying only on Zanzibar often gets a different recommendation from someone adding a mainland safari. Common active ingredients are atovaquone/proguanil, doxycycline or mefloquine – which of them is an option for you, what interactions exist with your medication and how it is dosed belongs exclusively in the consultation. All three are prescription-only.

If you are also planning a safari on the mainland – such as our Mikumi day trip or the two-day version – say so explicitly at your doctor's appointment. It changes the recommendation.

Mosquito Protection: The Part That Is in Your Own Hands

The Anopheles mosquito that transmits malaria bites mainly at dusk and at night. During the day on the beach the issue is small – it becomes relevant once the sun goes down. That is exactly when these measures work:

• Repellent with DEET or icaridin on all exposed skin, reapplied consistently in the evening
• Long, light-coloured and rather loose clothing from dusk onwards – dark, tight fabrics hardly help
• A mosquito net over the bed; if your room doesn't have one, ask – most places provide one
• Run the air conditioning or a fan – mosquitoes dislike cool, moving air
• Sunscreen first, repellent afterwards

That sounds like a lot, but after two evenings it becomes routine – and it also protects you against dengue, which is transmitted during the day.

Recognising Symptoms – and Acting Immediately

Malaria starts unspecifically: fever, chills, headache and aching limbs, a general feeling of illness. At first it feels like a flu-like infection. Symptoms can appear at the earliest about six days after infection – often only once you are back home, and in rare cases even months later.

The most important rule of your entire trip preparation: if you develop a fever during or after a tropical trip, see a doctor immediately and mention unprompted that you were in a malaria area. Detected early, malaria is readily treatable – it becomes dangerous almost only when it is considered too late.

On the Ground in Zanzibar

A rapid malaria test is routine on the island and quickly available in clinics and larger practices; the result is usually there within an hour. What healthcare on Zanzibar looks like overall – clinics, pharmacies, travel first-aid kit, insurance – is in the health guide.

If something feels off while you're here, just tell me. I know the way to a good clinic and will take you there if need be. That is not medical advice – just someone local who knows their way around.

What to Do and When

• 6 weeks before: appointment at a travel medicine practice, clarifying vaccinations at the same time
• 4 weeks before: fill the prescription, and test tolerance in good time if your doctor recommends it
• 2 weeks before: get repellent, mosquito net and travel first-aid kit
• Shortly before: check travel and international health insurance including repatriation

When you travel slightly influences the risk – you'll find the month-by-month breakdown in the best time to visit Zanzibar. Everything formal about entry, visa and money is in the travel basics.