Malaria is preventable and curable, and it can also kill quickly: WHO states that left untreated, P. falciparum malaria can progress to severe illness and death within 24 hours. Travellers are specifically named among the groups at higher risk of severe infection, alongside infants, young children, pregnant women and people with HIV.

That combination, preventable but fast, is what makes preparation worth doing properly. The Gulf is a major transit and expatriate hub with heavy travel to and from regions where malaria is endemic, so this is a practical question here rather than a remote one.

Key takeaways

  • Untreated falciparum malaria can become fatal within 24 hours.
  • Travellers are a named higher-risk group for severe infection.
  • Symptoms usually start 10 to 15 days after the bite, so illness often begins after you get home.
  • Early symptoms are non-specific: fever, headache and chills, easily mistaken for flu.
  • Any fever after travel to a malaria area is a medical emergency, and you must tell the doctor where you have been.
  • Which tablet you need depends on the destination, and the right one is chosen against a current country-specific risk map.
  • Tablets do not replace bite avoidance; prevention is both together.
  • The course continues after you return, and stopping early is a common and serious mistake.

How dangerous is malaria really?

Serious enough that a delayed diagnosis is the main thing that kills travellers.

WHO’s figures for 2024 record an estimated 282 million malaria cases and 610,000 deaths across 80 countries, with the African Region carrying 95% of cases and 95% of deaths, and children under 5 accounting for about 75% of deaths in that Region.

For a traveller the relevant risk is not the statistical average, it is the speed. Malaria is a life-threatening disease spread by mosquitoes, it is preventable and curable, and untreated falciparum malaria can progress to severe illness and death within 24 hours.

Of the five Plasmodium species that infect humans, P. falciparum and P. vivax pose the greatest threat. P. falciparum is the deadliest and most prevalent in Africa; P. vivax is dominant in most countries outside sub-Saharan Africa. Which one is present where you are going shapes what prevention is appropriate.

What are the symptoms, and when do they start?

Fever, headache and chills, usually beginning 10 to 15 days after being bitten.

The timing is the part that catches people. Symptoms usually start within 10 to 15 days of an infected bite, which means a two-week trip can easily end before anything appears. People fall ill at home, do not connect it to travel, and are assessed as though they have flu.

WHO also warns that first symptoms may be mild and similar to many febrile illnesses, and difficult to recognise as malaria, and that symptoms may be especially mild in people who have had malaria before. Because the symptoms are not specific, getting tested early is important.

Severe symptoms requiring emergency care right away include extreme tiredness and fatigue, impaired consciousness, seizures, difficulty breathing and abnormal bleeding.

The single most useful thing you can do is tell any doctor where you have travelled, and when. A fever with a travel history is a different clinical question from a fever without one, and you are the only person who can supply that.

What does prevention actually involve?

Two things together: avoiding bites, and taking the right medicine for the destination.

WHO puts it simply: malaria can be prevented by avoiding mosquito bites and with medicines. Neither half is sufficient alone, and the tablets are the part people remember while the bite avoidance is the part they skip.

Avoiding bites:

  • Insect repellent on exposed skin, reapplied as directed.
  • Long sleeves and trousers after dusk, since the Anopheles mosquitoes that carry malaria bite mainly at night.
  • Sleeping under an insecticide-treated net where rooms are not screened or air conditioned.
  • Screens or air conditioning where available.

Medicines. Which antimalarial is appropriate depends entirely on where you are going, because resistance patterns and dominant species differ by country and change over time. This catalogue lists chloroquine, hydroxychloroquine, mefloquine and primaquine, and doxycycline is also used for prophylaxis. Which of these fits your trip is a clinical decision made against a current country-specific recommendation, not a shelf choice.

That is the reason this article does not tell you which tablet to take. A recommendation that is right for one country is wrong, and potentially useless, for the next.

When do I start, and when do I stop?

Start before you travel and continue after you return, for the period your prescriber specifies.

Different antimalarials have different schedules. Some begin days before departure, others weeks, and all continue for a defined period after leaving the malaria area. The reason is that the medicines act on the parasite at particular stages of its life cycle, and the cycle does not end when your flight does.

Stopping when you get home is the most common serious mistake. You feel well, the trip is over, and the remaining tablets look unnecessary. That is precisely the window in which the infection would declare itself.

Practical points:

  • Get advice well before departure, since some regimens must start weeks ahead.
  • Set a reminder for the post-travel doses.
  • If you have side effects, contact the prescriber rather than simply stopping; there is usually an alternative.
  • Take the full course even if nobody around you appeared to be bitten.

Does it matter that I live in the Gulf?

Yes, in two ways worth planning for.

First, this is a travel hub. Frequent trips to South Asia, East and West Africa and parts of Southeast Asia mean repeated exposure for many residents, including people visiting family in regions they grew up in.

Second, that last group carries a specific risk. People who grew up in a malaria area may have had partial immunity, and that immunity fades after years away. Returning to visit relatives, without prophylaxis, on the assumption that malaria is a problem for tourists rather than for you, is a recognised pattern. WHO notes that symptoms may be mild in those who have had malaria before, which makes late presentation more likely rather than less dangerous.

The practical rule is that where you were born does not exempt you from prevention on a visit home.

Do and don’t

Do:

  • Get destination-specific advice weeks before travelling.
  • Take prophylaxis exactly as prescribed, including after you return.
  • Use repellent and cover up after dusk.
  • Sleep under a treated net where rooms are unscreened.
  • Seek medical care immediately for any fever during or after travel.
  • Tell every doctor where you have travelled and when.

Don’t:

  • Don’t assume last trip’s tablets suit the next destination.
  • Don’t stop the course on the flight home.
  • Don’t rely on tablets alone without bite avoidance.
  • Don’t assume childhood exposure still protects you.
  • Don’t wait to see if a fever settles by itself.

Frequently asked questions

Can I catch malaria from another person? No. The infection is caused by a parasite and does not spread from person to person. It spreads mainly through bites of infected female Anopheles mosquitoes, though blood transfusion and contaminated needles can also transmit it.

If I took antimalarials, can I still get malaria? Yes. Prophylaxis substantially reduces the risk but does not eliminate it, which is exactly why a fever after travel must still be assessed urgently even if you took every tablet.

How soon after a fever should I seek help? Straight away, if you have been in a malaria area. Getting treatment early for mild malaria can stop it becoming severe, and people with severe symptoms need emergency care right away.

Where to go next

The antiparasitics category lists what is stocked here, and malaria prophylaxis approaches it from the indication. If you are travelling with medicines, the rules on carrying them are in bringing medicine into the UAE, and heat affects how they should be stored, covered in storing medicine in a Gulf summer.

MedicForce option: our antimalarial listings show active ingredient and strength, so a regimen recommended for a specific destination can be matched precisely.

  • Malaria, WHO the global burden, the parasite species, symptoms and their timing, severe symptoms, and prevention.
  • Country information, TravelHealthPro destination-specific malaria risk and prevention recommendations, which is the kind of current, country-level source this decision needs.