Travellers are being cautioned over visiting Bali amid a worrying outbreak of the mosquito-borne virus dengue fever.
The WA Health Department has warned the number of those suffering from the disease has topped 150 so far this year, up from a total of 16 in 2006.
Symptoms include fever, severe headache, aching joints and muscles, pain behind the eyes, nausea, vomiting and a rash and usually occur within three to 14 days of being bitten.