Lesotho has no malaria. Ticks on the grassy trails are the bug to watch.
- No CDC travel notice for mosquito-borne disease
CDC lists no malaria, dengue, chikungunya or Zika for Lesotho and doesn't recommend the yellow fever vaccine. High, cool country tends to keep mosquitoes few, so the routine is about ticks on summer hikes and pony treks around Semonkong and Malealea.
Are there mosquitoes in Lesotho? A few, but CDC lists no malaria, dengue, chikungunya or Zika for the country, and Lesotho is on WHO's list of malaria-free countries. This is high, cool country where mosquitoes tend to be scarce, and the bug worth planning for is the tick in the grass on summer hikes and pony treks.
No mosquito-borne disease to plan for
CDC's Lesotho page has no malaria section and lists no malaria areas. WHO's World Malaria Report 2025 places Lesotho among the countries where malaria never existed or disappeared without specific measures, with the year 2012. CDC doesn't recommend the yellow fever vaccine, and Lesotho doesn't require proof of it, even from travelers arriving from a country with yellow fever risk. In the lowlands around Maseru, any EPA-registered repellent, such as picaridin 20%, covers the occasional summer mosquito.
Ticks on the trails
CDC lists African tick-bite fever for Lesotho. The grassy hiking and pony-trekking country around Semonkong, Malealea and the mountain lodges is where ticks tend to wait, mostly in the warm, wet summer. On a trek, wear long trousers tucked into socks and closed shoes. Put a repellent with 20% or more DEET on exposed skin, the strength CDC suggests where ticks are a concern, or treat trousers and socks with permethrin at home before you fly. Permethrin goes on clothing, never skin. After the ride, check your legs, the backs of your knees and your waistband, and check children all over. Our picaridin vs. DEET comparison explains the choice.
When to go
Bites tend to be fewest in the cold, dry winter, roughly May to September, when there's snow at high passes such as Sani. The warm, wet summer, roughly November to March, tends to bring more flies and ticks in the grass.
Where you're going
Maseru
The capital, in the western lowlands. CDC lists no malaria or dengue, and an ordinary repellent handles the occasional summer mosquito.
Semonkong & Maletsunyane Falls
Hiking and pony trails to the falls cross grassland, so tuck trousers into socks and check for ticks afterward.
Malealea & the mountain lodges
Pony treks and village walks through the grass make ticks the bug to plan for. Permethrin-treated trousers or 20% DEET on the legs covers it.
Sani Pass & Sani Top
A high pass on the South African border, cold for much of the year, where biting insects tend to be scarce.
Continuing to Kruger or Eswatini's lowveld? Those areas raise a separate malaria question, so check CDC's advice for them. Our South Africa and Eswatini briefings cover the details.
The Lesotho kit
- Permethrin 0.5% for clothing: treat trousers and socks at home 48 hours before you fly. It keeps working through several washes.
- Picaridin 20% travel sprays for summer evenings in the lowlands. The 3.4 oz size rides in a carry-on.
Two last notes. CDC lists schistosomiasis, so avoid swimming in fresh water, and WHO's Africa office reported a measles outbreak first detected in Botha Bothe District in September 2026, so check that your MMR shots are current. And as on any trip, a fever during or after it means a doctor visit, and you tell them where you were.
Traveler questions
Do I need malaria pills for Lesotho?
CDC doesn't recommend any. Its Lesotho page has no malaria section and lists no malaria areas, and Lesotho is on WHO's list of malaria-free countries. If your trip continues to Kruger or the lowveld parks of South Africa or Eswatini, check CDC's malaria advice for those areas separately.
Do I need a yellow fever vaccine for Lesotho?
No. CDC says "Vaccine is not recommended," and gives Lesotho's entry rule as "Vaccine is not required," with no requirement listed even for travelers arriving from a country with yellow fever risk.
How do I avoid ticks on a pony trek?
Wear long trousers tucked into socks and closed shoes. Use a repellent with 20% or more DEET on exposed skin, the strength CDC suggests where ticks are a concern, or treat your trousers and socks with permethrin before the trip. After the ride, check your legs, the backs of your knees and your waistband, and check children all over. CDC lists African tick-bite fever for Lesotho, so mention any tick bite if you see a doctor afterward.
Sources
Health authorities, surveillance reports and news coverage of official bulletins used for this briefing, last checked October 2026. Traveler reports are linked where they appear. This page summarizes public-health guidance and is not medical advice.