Quito is too high for mosquitoes. The Galápagos are not.
Ecuador's capital sits above the dengue mosquito's range, but the Galápagos had the country's highest dengue incidence in 2026. An Amazon lodge adds malaria and yellow fever questions for a travel clinic.
Yes, though not where most trips start. Quito sits at about 9,350 feet (2,850 m), too high for the dengue mosquito, and bites there are rare. The Galápagos had Ecuador's highest dengue incidence in 2026, and an Amazon lodge stay calls for a travel-clinic visit about malaria and yellow fever.
Dengue in the Galápagos and on the coast
Ecuador is on the CDC's global dengue list, a Level 1 notice for countries with higher-than-usual case counts or more cases than expected among returning US travelers. The Pan American Health Organization counted more than 35,000 cases nationwide through mid-September 2026, mostly the DENV-3 type. The season also ran late, with more than 1,200 cases a week from late August into September, while 2025 peaked in May.
The Galápagos had the highest incidence in the country, a cumulative 2,069 cases per 100,000 people by October 3, according to health ministry figures reported in October. The dengue mosquito, Aedes aegypti, reached the islands in the 1990s, Ecuadorian researchers report. Introduced mosquitoes concentrate around the island towns of Puerto Ayora, Puerto Baquerizo Moreno and Puerto Villamil, especially near mangroves.
On the mainland, Guayas, Manabí and Los Ríos led in case counts as of July, so Guayaquil and the beach towns need the same habit. Aedes bites by day, with peaks after sunrise and in the late afternoon. Wear repellent over sunscreen in town, take it on mangrove panga rides and reapply before evenings in port. Our dengue & Zika daily routine has the full schedule.
Amazon lodges: book the travel clinic
Cuyabeno lies in Sucumbíos province and the Yasuní area mostly in Orellana, two of the six provinces where the CDC lists malaria medicine. Lodges near Tena are in Napo, a rare-case area with no medicine listed. All three are inside the CDC's yellow fever vaccine area. PAHO reported 11 confirmed yellow fever cases and 8 deaths in 2025 in Morona Santiago, Sucumbíos and Zamora-Chinchipe, and the World Health Organization listed Ecuador among six countries reporting cases from January to May 2026.
What we suggest you do with this: book a travel-medicine appointment 4–6 weeks before departure and bring the lodge's name and location, since lodge sites vary. The CDC lists malaria medicine for areas below 5,000 feet (1,500 m) in Cotopaxi, Esmeraldas, Morona-Santiago, Orellana, Pastaza and Sucumbíos, and recommends yellow fever vaccine for travelers 9 months and older going below 7,550 feet (2,300 m) east of the Andes in Morona-Santiago, Napo, Orellana, Pastaza, Sucumbíos, Tungurahua and Zamora-Chinchipe. Neither applies to Quito, Guayaquil or the Galápagos. Our malaria-zone checklist covers the rest.
At the lodge, malaria mosquitoes and the forest sand flies that the CDC links to leishmaniasis bite from dusk to dawn. Permethrin-treated long sleeves and trousers help against both, and permethrin goes on fabric at home, never on skin.
When to go
For the coast and the Galápagos, roughly June to November is the better half of the year. Dengue is normally lower then, going by 2025, and island visitors report fewer insects. January to May is usually worst on the coast and in the island towns. This year broke the pattern, with dengue still climbing in September, so keep the daytime habit in any month. Quito is low-risk all year, and the Amazon advice applies in every month.
Where you're going
Quito
At about 9,350 feet (2,850 m), too high for the dengue mosquito, and bites are rare. The CDC reports no malaria in the city and does not recommend yellow fever vaccine for a Quito stay.
Galápagos: Santa Cruz, San Cristóbal & Isabela
The highest dengue incidence in Ecuador in 2026, so wear daytime repellent in the towns and on mangrove rides. No malaria, and the CDC does not recommend yellow fever vaccine; cruise stops on uninhabited islands have few mosquitoes.
Amazon lodges: Cuyabeno, Yasuní & Napo
The part of a typical Ecuador trip that needs a travel-clinic visit, for malaria medicine and yellow fever vaccine. Expect rainforest mosquitoes, plus malaria mosquitoes and forest sand flies that bite from dusk to dawn.
Guayaquil & the Pacific coast
Guayas and Manabí were among the provinces with the most dengue cases in 2026, so the daytime routine applies here too. No malaria in Guayaquil, and yellow fever vaccine is generally not recommended.
The Ecuador kit
- Picaridin 20% travel sprays: odorless, layers over sunscreen and fits a cruise daypack for town visits and panga rides. One 3.4 oz bottle covers about a week of daily use for one person.
- Permethrin 0.5% for lodge clothes: treat long sleeves, trousers and socks at home 48 hours before you fly. Treated fabric repels and kills insects on contact through several washes.
One rule outlasts the trip. Any fever during or after your trip means a doctor visit, and you tell them you were in Ecuador, including whether the Amazon or the Galápagos was on the route.
What travelers report
Paraphrased from forum threads and linked so you can read them in full. Both come from Galápagos trips in late spring, and individual trips vary with weather, wind and where you stay.
- Galápagos cruise · early June · 2022
A cruise passenger's trip report said they had no problem with insects and saw no mosquitoes. TripAdvisor ↗
- Galápagos (Puerto Ayora) · May
A May visitor said the introduced mosquitoes and flies concentrate around the inhabited islands of Santa Cruz, San Cristóbal and Isabela, and that the main nuisance in Puerto Ayora was non-native paper wasps rather than mosquitoes. TripAdvisor ↗
Traveler questions
Do I need malaria pills for the Galápagos or Quito?
The CDC reports no malaria transmission on the Galápagos Islands or in Quito or Guayaquil, and it lists no malaria medicine for them. It also does not recommend yellow fever vaccine for travel limited to those places. The issue on the islands is dengue, spread by mosquitoes that bite in daylight, so wear repellent in the towns and on mangrove rides.
Do I need a yellow fever vaccine for an Amazon lodge?
The CDC recommends it for travelers 9 months and older going to areas below 7,550 feet (2,300 m) east of the Andes in Morona-Santiago, Napo, Orellana, Pastaza, Sucumbíos, Tungurahua and Zamora-Chinchipe, which takes in the main lodge areas. Ecuador also requires proof of vaccination for travelers aged 1 to 60 who have spent more than 10 days in Colombia, Peru, Brazil or Bolivia, and the dose must be at least 10 days old. Book a travel clinic 4–6 weeks before departure. Our Colombia briefing covers that side of the border.
Are there mosquitoes on a Galápagos cruise?
Usually few. The introduced mosquitoes concentrate around the towns on Santa Cruz, San Cristóbal and Isabela, and the uninhabited islands that cruises visit have few. Panga rides through the mangroves and evenings in port are the exceptions. Galápagos forum regulars say December to April is the buggiest stretch.
I'm pregnant. Is there Zika in Ecuador?
The CDC's Ecuador page lists Zika, which spreads through mosquito bites and from a pregnant woman to her baby. There is no current Zika travel notice for Ecuador. If you're pregnant, review the CDC's Zika guidance before you book.
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.