What should you know about Iguazu Falls and yellow fever?

Yellow fever is a mosquito-borne viral infection. Risk depends on the places you visit, time spent outdoors, season, accommodation, and local transmission patterns. Iguazu Falls spans a region where travellers may move between countries, so the full route matters rather than the attraction name alone.

Early illness can include fever, headache, muscle aches, nausea, and weakness. Some infections become severe, with jaundice, bleeding, or organ problems. A travel consultation helps separate vaccine advice from entry-document requirements and considers pregnancy, immune conditions, allergies, and previous vaccination.

Book a travel-health appointment well before departure and bring your complete itinerary, passport details if entry rules are relevant, vaccination record, and medication list. Discuss whether yellow-fever vaccination is suitable and whether a certificate is needed for your onward travel. Read more about [Yellow Fever Vaccination](/treatments/preventive-care-and-vaccination/yellow-fever-vaccination/).

Use repellent on exposed skin, wear long sleeves and trousers when practical, and choose screened or air-conditioned rooms. Mosquito protection remains useful even if you are vaccinated because other mosquito-borne infections can occur.

Seek medical advice promptly for fever during travel or after returning from an area where yellow fever may occur, and mention your travel dates and places visited. Get urgent help for jaundice, unusual bleeding, severe vomiting, confusion, extreme weakness, or breathing difficulty. Do not wait for a rash or for symptoms to become severe.

Ask whether your route has yellow-fever risk, whether vaccination is appropriate for you, when it should be given, what certificate rules apply, and which mosquito precautions suit your activities.