Yerevan is nearly bite-free. Bring repellent for Dilijan and Lake Sevan.
- No CDC travel notice for mosquito-borne disease
No mosquito-borne disease has been reported in Armenia, and WHO certified the country malaria-free in 2011. Mosquitoes are a forest and lakeshore matter around Dilijan and Lake Sevan, sand flies bite after dark, and ticks around Sisian in Syunik have carried CCHF virus.
Some, mostly outside the capital. Yerevan has a reputation for few mosquitoes, while the forests around Dilijan and parts of the Lake Sevan shore have more of them. WHO certified Armenia malaria-free in 2011, no dengue, chikungunya or West Nile cases have been reported, and CDC recommends no malaria medicine or yellow fever vaccine.
Yerevan, Dilijan and Lake Sevan
A summer day in Yerevan is mostly bite-free. The mosquitoes tend to be in greener, wetter places, such as the Tavush forests around Dilijan, Haghartsin and Goshavank and parts of the Lake Sevan shore, where some beaches are said to have none. Armenia's national mosquito survey, run from June 20 to July 12, 2016, found mosquitoes at 73% of the sites it sampled, and 28 species are recorded in the country. Put repellent on before a forest walk or a lakeside dinner, and again at dusk.
The day-biting tiger mosquito was first recorded in Armenia in 2016 at Bagratashen, the border crossing on the Tbilisi–Yerevan road, and turned up again in 2017 and 2018, showing it had settled in the north. The European Centre for Disease Prevention and Control's April 2026 map adds a new area of Armenia where it is established. No local dengue or chikungunya has been reported. The house mosquito, which carries West Nile elsewhere in Europe, lives in all 11 of Armenia's regions, and none of the 473 tested by the national disease-control agency in 2021 carried the virus. Malaria mosquitoes also still live in Armenia, a 2016–2018 survey confirmed, though WHO certified the country malaria-free in 2011 and CDC recommends no malaria medicine.
Sand flies after dark, ticks in Syunik
CDC's Armenia page lists leishmaniasis, spread by sand flies that bite from dusk to dawn. The visceral form has been re-emerging since 1999 but stays rare, with 167 cases recorded through 2019, mostly in children. A modeling study put Yerevan and the Lori, Tavush, Syunik, Armavir and Ararat districts at the highest risk. The evening repellent you use against mosquitoes covers sand flies too, so reapply after dark on village stays and outdoor terraces.
CDC also lists Crimean-Congo hemorrhagic fever, spread by ticks. In 2021 fieldwork, the virus turned up in Hyalomma ticks around Sisian, in Syunik, the province of Tatev and Goris. For rural walks there and anywhere near sheep or cattle, CDC advises a repellent with 20% or more DEET. Wear long trousers, tuck them into your socks and check for ticks afterwards. Ticks tend to be a warm-season problem, so a spring or early fall hike needs the same check. Our picaridin vs. DEET comparison explains when DEET is the better pick.
Where you're going
How the main stops compare for a June–September trip.
Yerevan
Little to worry about on a city break. Yerevan is among the areas modeled at higher risk for leishmaniasis, though Armenia records only a handful of cases a year, so a small spray for late dinners outside is enough.
Lake Sevan
A high, cool lake where some stretches of shore have mosquitoes and others are said to be free of them. Put repellent on for a lakeside evening.
Dilijan, Haghartsin & Goshavank
The buggiest stop on a typical trip, with mosquitoes in the forests around the monasteries and the resort town. Repellent before a forest walk, and long sleeves for the evening.
Tatev, Goris & Syunik
Ticks around Sisian carried CCHF virus in 2021 testing. Wear long trousers on rural walks, use a DEET repellent near livestock and check for ticks afterwards.
Coming from Tbilisi? Our Georgia briefing covers Tbilisi, Kakheti and the Black Sea coast, and our Azerbaijan briefing covers Baku and Sheki.
The Armenia kit
- Picaridin 20% travel sprays: odorless for Dilijan forest walks, Lake Sevan evenings and village terraces after dark. One 3.4 oz bottle covers about a week of daily use for one person.
- Permethrin for hiking pants and socks: treat them at home before you fly if Tatev, Goris or other rural walks are on the plan. It goes on clothing, never on skin.
What travelers report
Paraphrased from TripAdvisor forum threads and linked so you can read them in full. Neither is dated, and a forest walk bites more than a day in Yerevan.
- Armenia (Yerevan and forests)
Asked whether mosquitoes are an annoyance, a resident of about 45 years said it depends: no in the city, yes in the forest. They had never used a net, only sprays now and then. The thread is several years old. TripAdvisor ↗
- Lake Sevan beaches
In a thread on Sevan beaches, a poster said the other side of the lake has better beaches that are free from mosquitoes and have some forest. TripAdvisor ↗
One more rule outlasts the trip. Any fever during or after your trip, and especially after a tick bite, means a doctor visit, and you tell them you were in Armenia.
Traveler questions
Do I need malaria pills for Armenia?
No. WHO certified Armenia malaria-free in 2011, and CDC lists no malaria medicine for any part of the country. The yellow fever vaccine is neither recommended nor required. CDC lists two bite-borne diseases for Armenia, leishmaniasis from sand flies and Crimean-Congo hemorrhagic fever from ticks, and its advice for both is to avoid bug bites.
Are there mosquitoes in Yerevan?
Few. The city has a reputation for being nearly bite-free in summer, and no mosquito-borne disease has been reported in Armenia. Yerevan is one of the areas a modeling study placed at higher risk for leishmaniasis, which sand flies spread after dark, but Armenia records only a handful of cases a year, mostly in children. A small spray for dinners outside covers it.
Are there mosquitoes at Lake Sevan and in Dilijan?
Some. The forests around Dilijan, Haghartsin and Goshavank are where mosquitoes are most noticeable, and Lake Sevan varies by shore, with some beaches said to be free of them. Put repellent on before a forest walk or a lakeside evening, and reapply at dusk.
What should I know about ticks on the way to Tatev?
In 2021 fieldwork, 13 of 525 tick pools tested positive for Crimean-Congo hemorrhagic fever virus, all from Hyalomma ticks around Sisian, in Syunik, the province of Tatev and Goris. CDC lists the disease for Armenia. On rural walks and near sheep or cattle, CDC advises a repellent with 20% or more DEET. Wear long trousers, check for ticks afterwards, and get medical care for a fever after a tick bite.
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
- Peer-reviewed study (PubMed Central)
- European Centre for Disease Prevention and Control
- World Health Organization
- Peer-reviewed study (PubMed Central)
- European Centre for Disease Prevention and Control
- Peer-reviewed study (PubMed Central)
- Peer-reviewed study (PubMed Central)