You booked the trip, the excitement is real, and then someone mentions malaria and your stomach drops. The good news: for travelers heading to malaria zones, this is one of the most preventable serious infections out there. With the right plan, you can dramatically lower your risk and travel with confidence.
Malaria prevention for travelers comes down to two things done together: taking a prescribed antimalarial medication and protecting yourself from mosquito bites. Neither alone is enough, and the exact plan depends on where you're going. Here's how it works.
What is malaria and why does prevention matter?
Malaria is a serious, sometimes life-threatening infection caused by Plasmodium parasites spread through the bite of infected mosquitoes. Globally it remains a major threat: the WHO World Malaria Report 2024 estimated 263 million cases and roughly 597,000 deaths in 2023, with about 95% of cases and deaths in the WHO African Region.
For people living in the United States, malaria is almost always a travel-related illness. About 2,000 cases are diagnosed in the U.S. in a typical year, and nearly all are imported by returning travelers. In 2019, of cases with a known country of acquisition, 93% were acquired in Africa, 4% in Asia, and 2% in the Caribbean and Americas. Travelers visiting friends and relatives are an especially affected group, making up 76% of civilian cases that reported a reason for travel in 2019.
Prevention matters because malaria can progress quickly and because, unlike many travel illnesses, there is currently no malaria vaccine available for most travelers. Preventive medication and bite protection are your main tools.
Start with a personalized risk assessment
Before anything else, the CDC recommends every traveler get an individualized malaria risk assessment. There's no single plan that fits everyone, because risk depends on the details of your trip.
A good assessment looks at where you're going (specific countries and regions), the type of accommodation, the season, and your travel style, along with personal factors like pregnancy or other health conditions. Based on that picture, recommendations range from mosquito avoidance only, to mosquito avoidance plus preventive medication. For areas of intense transmission, the CDC advises that preventive medication should always be used, even for short stays.
- Destination countries and specific regions you'll visit
- Type of accommodation (air-conditioned hotel vs. rural lodging)
- Season and length of stay
- Your travel style and activities
- Personal factors such as pregnancy, age, or other health conditions
Which malaria prevention pills do travelers take?
Antimalarial medication, called chemoprophylaxis, is prescription-only and chosen based on your destination, because recommended drugs differ by country. The CDC lists destination-specific recommendations in its Yellow Book, and the recommended options have comparable efficacy.
For regions with chloroquine-resistant malaria, which includes much of sub-Saharan Africa, the three first-line options are atovaquone-proguanil (sold as Malarone), doxycycline, and mefloquine. Tafenoquine and primaquine are additional options in certain situations. One 2007 systematic review found atovaquone-proguanil had about 96% efficacy against P. falciparum. The Mayo Clinic also notes regimens such as quinine sulfate with doxycycline and primaquine phosphate, with the right choice depending on destination, trip length, and your health.
Timing is part of the protection. The CDC recommends starting chemoprophylaxis 1 to 2 weeks before travel, depending on the drug, so the medication is active in your system when you arrive. Because no antimalarial is right for everyone, the specific drug, the start date, and how long to continue it after you return must be decided by a clinician.
Don't skip mosquito-bite protection
Medication is only half the strategy. Malaria prevention is the combination of chemoprophylaxis plus mosquito-avoidance measures, and the two work together. Even on the right pills, reducing bites lowers your overall risk.
The Mayo Clinic recommends protective clothing, bed nets, and insect repellents. Effective repellents include those containing DEET, picaridin (also called icaridin), or oil of lemon eucalyptus.
- Use an EPA-registered repellent with DEET, picaridin/icaridin, or oil of lemon eucalyptus
- Wear long sleeves and long pants, especially around dusk and dawn
- Sleep under an insecticide-treated bed net when rooms aren't screened or air-conditioned
- Choose accommodation with screens or air conditioning where possible
After your trip: relapse prevention and watching for fever
For some travelers, prevention continues after you get home. If you were exposed to P. vivax or P. ovale, a clinician may prescribe terminal (anti-relapse) therapy, typically primaquine taken for 14 days after leaving the endemic area, to clear parasite forms that can otherwise reactivate later. If tafenoquine or primaquine was used as your primary prevention, separate terminal therapy is usually not needed.
Just as important: no prevention method is 100% effective. The CDC is clear that every traveler who develops a fever after returning from a malaria-endemic area should be tested for malaria, even if they took their preventive medication exactly as prescribed.
When to see a doctor
See a travel medicine clinician well before you leave, ideally several weeks ahead, so there's time to choose the right medication and start it on schedule. This is also the moment to flag pregnancy, young children, or chronic conditions, which can change the safest choice of drug.
After travel, treat fever as urgent. If you develop a fever, chills, or flu-like symptoms during or after a trip to a malaria area, even weeks later, seek medical care promptly and tell the provider exactly where you traveled. Malaria can become severe quickly, so timely testing and treatment can be lifesaving. If you'd like help building a personalized prevention plan, a clinician, including through Nolla, can walk you through your options.
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before starting any new skincare treatment, especially if you have underlying health conditions, are pregnant, or are taking medications.
