Oceania is quite a safe region that has not experienced any fatal tropical epidemics for several decades. The main risks are related to venomous animals, especially in Australia, and infectious diseases carried by mosquitoes.
Dengue is present in some island states in Oceania and in the Queensland region of Australia. The risk is, however, extremely low for travellers, with very few cases recorded every year.
However, countries in Oceania are within the area affected by malaria, one of the most widespread diseases in the world. If you experience symptoms during your trip, contact your doctor immediately.
To protect yourself against malaria and dengue, it is highly recommended that you take preventive medication, wear mosquito repellent and invest in a mosquito net. Cases of malaria in Oceania are, however, less frequent than in other global regions.
You should also be wary of animals. This is because, mainly in Australia but also in other island states in Oceania, certain animals are venomous, and can sometimes have fatal consequences for humans.
Stonefish have been detected in Australia. The poison contained in stonefish venom causes paralysis and can result in drowning. It is therefore important to wear suitable protective shoes when swimming.
Swimming can also be dangerous for another reason: water can contain schistosoma, a flatworm responsible for causing an itchy, inflamed rash on the skin. To protect yourself, avoid swimming in murky water.