There have been outbreaks in poultry and wild birds in Europe, North and South America, and Asia, the government’s SmarTraveller website warned.

“Human infection is rare,” the warning read.

“But be aware of increased health risks when travelling to impacted countries.”

There’s currently no specific avain influenza vaccine available, but the annual flu vaccine helps stop the disease from becoming a bigger threat to humans.

Travellers are urged to ensure their flu vaccine is up to date.

While in affected areas, people are urged to minimise contact with animals, and outright avoid contact with dead or sick animals.

Travellers are also advised to steer clear of poultry farms and live bird “wet” markets.

Bird meat and eggs are safe to eat if cooked thoroughly and prepared hygienically.

Symptoms include conjunctivitis, fever, cough, sore throught, runny or blocked nose, muscle or body aches, fatigue, shortness of breath, and pneumonia.

However, infected people may also show no symptoms.

Anybody who feels ill while overseas is advised to seek medical help.

If you feel ill on your return to Australia, tell a crew member or airport staff and mention any contact with birds or animals.

For more information, check the government’s SmarTraveller website.