No malaria in Luang Prabang, says the CDC. Plan around the day-biting tiger mosquito.
- Travel clinic CDC recommends medicine or vaccines for some areas · which ones
- No CDC travel notice for mosquito-borne disease
The CDC lists "None in the cities of Luang Prabang and Vientiane" and recommends no malaria medicine for the north, which covers Kuang Si Falls and the Pak Ou caves. Dengue is endemic, and the tiger mosquito that dominates the forests around the city bites by day, most of all in the rainy season.
Yes, and the one to plan for spreads dengue. The CDC names Luang Prabang as having no malaria and recommends no malaria medicine for the north of Laos, Kuang Si Falls and the Pak Ou caves included. Dengue is endemic, and the mosquitoes that carry it bite in daylight. Our Laos briefing covers Vang Vieng, Vientiane and the 4,000 Islands.
Outside the malaria line
The CDC's Laos page lists malaria as "Present in the southern part of the country in the provinces of Attapeu, Champasak, Khammouane, Salavan, Savannakhet, and Sekong," with "Rare cases in the northern part of the country" and "None in the cities of Luang Prabang and Vientiane (the capital)." For the north, its medicine table reads "No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only)." Kuang Si Falls, the Pak Ou caves and river trips on the Mekong and the Nam Ou are in Luang Prabang province, in the north, so none of them is inside a CDC malaria-medicine area.
Dengue and the tiger mosquito
The World Health Organization's Western Pacific office counted 5,674 dengue cases in Laos by October 10, 2026, 40.5% fewer than the 9,540 at the same point in 2025. The year has swung. At the end of April cases were running 52.8% above 2025, by mid-September they were well below it, and in the week of October 4–10 weekly cases jumped to 355 from 169. WHO's figures are national. Luang Prabang province wasn't among the three leading provinces in 2025, which were Vientiane Capital, Oudomxay and Vientiane Province, the national news agency KPL reported.
The mosquito to plan around is the tiger mosquito, Aedes albopictus. In Institut Pasteur du Laos studies with human-baited traps in Luang Prabang province, it dominated catches in forest and rubber plantations, was about six times more abundant in the rainy season than the dry, and bit around the clock with a peak around 6 pm, according to papers published in 2017 and 2018. That puts the risk in the temple gardens, on the forest trails at Kuang Si and in the sunset crowd on Phou Si. Put repellent on over sunscreen before a morning at the temples or the drive to Kuang Si, reapply after you sweat and again before sunset. Our dengue & Zika routine has the full schedule.
Evenings tend to bring their own bites at the riverside cafés on the Mekong and the Nam Khan and in the night market, so wear light long sleeves and trousers for dinner by the water. Sleep in an air-conditioned or screened room, or under an intact net in a simple guesthouse.
Vaccines and the rest of the list
The same Pasteur studies found the mosquito that carries Japanese encephalitis, Culex vishnui, most common in villages. CDC's advice turns on the kind of trip. A few nights in the old town fits "short-term travel to urban areas," while homestays, treks and multi-day river trips fit "visiting rural areas," as the FAQ below explains. CDC lists Zika for Laos, so pregnant travelers should talk to a provider first. Yellow fever vaccine isn't recommended or required. CDC's Laos page also carries a Level 2 global polio notice, so check that your polio vaccination is up to date. It advises against swimming in fresh, unchlorinated water because of schistosomiasis, so ask the clinic before you swim at Kuang Si.
Where you're going
The old town & night market
Temples, cafés and the night market between the Mekong and the Nam Khan. Tiger mosquitoes in the temple gardens by day and bites at the riverside cafés in the evening, so repellent at breakfast and again before sunset.
Phou Si hill
The wooded hill and stairway in the middle of town, busiest at sunset, close to the tiger mosquito's early-evening peak. Put repellent on before the climb, not at the top.
Kuang Si Falls
Forest waterfall and turquoise pools south of the city, in the north where the CDC recommends no malaria medicine. Its forest trails and pools are tiger-mosquito habitat by day, so put repellent on before you set off from the parking area.
Pak Ou caves & the Mekong boat
Buddha-filled river caves reached by a day boat up the Mekong, often with a village stop. The water tends to be breezy, while landings and villages tend to have more biters.
Coming from northern Thailand? Our Chiang Mai briefing covers dengue there and where CDC's malaria advice applies.
The Luang Prabang kit
- Picaridin 20% travel sprays: odorless in the heat, layers over sunscreen and is quick to reapply on the Kuang Si trails. One 3.4 oz bottle covers about a week of daily use for one person.
- Permethrin 0.5% for evening clothes: treat a long-sleeved shirt and light trousers at home 48 hours before you fly. It goes on fabric, never on skin, and helps most on village stays and treks.
What travelers report
Paraphrased from a TripAdvisor review and forum thread and linked so you can read them in full. Neither is dated, so use the figures above for this year.
- Kuang Si Falls, Luang Prabang · monsoon season
A reviewer who visited in the rainy season recommended bringing lots of mosquito repellent. TripAdvisor ↗
- Luang Prabang · late December and January
Asked about mosquitoes in late December and January, a poster said mosquitoes are more active in the wet season and dengue numbers usually go up in June and July at the start of the proper rainy season, and suggested long sleeves and repellent in the evenings. TripAdvisor ↗
Any fever during or after your trip means a doctor visit, and you tell them you were in Laos and whether you went south.
Traveler questions
Do I need malaria pills for Luang Prabang?
No. The CDC lists "None in the cities of Luang Prabang and Vientiane (the capital)" and "Rare cases in the northern part of the country," and for the north it says "No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only)." Kuang Si Falls and the Pak Ou caves are in the north. The CDC does recommend malaria medicine for the southern provinces of Attapeu, Champasak, Khammouane, Salavan, Savannakhet and Sekong, so if your route continues to the 4,000 Islands or Pakse, take that leg to a travel clinic 4–6 weeks before departure.
Is there dengue in Luang Prabang right now?
Dengue is endemic across Laos, and the World Health Organization's figures are national. WHO counted 5,674 cases by October 10, 2026, 40.5% fewer than at the same point in 2025, but weekly cases jumped from 169 to 355 in the week of October 4–10. The tiger mosquito around Luang Prabang bites around the clock, with a peak around 6 pm, so wear repellent for daytime outings as well as at dusk.
Do I need the Japanese encephalitis vaccine for Luang Prabang?
For a few nights in the old town, the CDC's wording is "Not recommended for travelers planning short-term travel to urban areas." It says to consider the vaccine for shorter trips that include "visiting rural areas, hiking or camping, or staying in places without air conditioning, screens, or bed nets," and recommends it for a month or more in areas with the disease. In Institut Pasteur du Laos trapping around Luang Prabang province, the mosquito that carries Japanese encephalitis was most common in villages, so homestays, treks and multi-day river trips are the itineraries to take to a travel clinic.
When is the best time to visit Luang Prabang for fewer mosquitoes?
November to February, the cool, dry season. March and April tend to be hot and hazy, and the rains run roughly May to October. June to September is the hardest stretch, when the tiger mosquito is far more common and Kuang Si's trails get buggy. The CDC recommends no malaria medicine for the city in any month.
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.
- CDC destination page for travelers
- World Health Organization
- World Health Organization
- World Health Organization
- World Health Organization
- World Health Organization
- European Centre for Disease Prevention and Control
- Government source (kpl.gov.la)
- Government source (kpl.gov.la)
- Government source (kpl.gov.la)
- worldmosquitoprogram.org
- Peer-reviewed study (PubMed Central)
- Peer-reviewed study (PubMed Central)
- European Centre for Disease Prevention and Control