The New Zealand Government is reminding travellers to the Pacific and North Queensland to protect against mosquito bites as the rainy season starts.
The Ministry of Foreign Affairs and Trade (MFAT) says there is no vaccine or medication to protect against dengue fever, a virus transmitted by mosquitoes.
It says outbreaks of dengue fever have occurred in the Cook Islands, Fiji, Kiribati, New Caledonia, Palau, Samoa, Tonga and Vanuatu.
It says travellers should use insect repellent, wear protective clothing and stay in accommodation with mosquito screens on windows.
People who feel unwell during a trip or within a couple of weeks of travel should seek immediate medical advice.
Symptoms of dengue fever are described as a sudden onset of high fever, severe headache and sometimes skin rash, joint pain and vomiting.
The rainy season extends from November to April.
