Another mosquito borne disease getting closer to the NSW North Coast

2009 map of historical QLD Dengue Fever distribution. Dengue has historically been reported in the Northern Territory, New South Wales and north Queensland but it is currently limited by the distribution of its vector, the dengue mosquito to north Queensland.

Ross River Fever (and to a slightly lesser extent Barmah Forest Virus) have long been established on the NSW North Coast.

According to a NSW Dept. of Health media release Mosquito Warning Across NSW issued at the beginning of the month: Ross River Virus is the most widespread arboviral disease in the NSW North Coast region, accounting for about 60% of notifications over the past 20 years and 48.5% over the past 10 years. Notifications of Ross River virus infection from the North Coast accounted for about 33% of all NSW Ross River notifications over the past 10 years and The North Coast has the highest levels of Barmah Forest virus infection incidence in NSW. Notifications of Barmah Forest virus infection from the North Coast accounted for about 55% of all NSW notifications of this infection over the past 10 years.

Now the deadlier Dengue Fever is once more beginning to edge down the Australian east coast towards south-east Queensland from where it will be a short hop across the NSW border.

From The Observer in Gladstone Queensland on 2 April 2010:

QUEENSLAND Health has mounted a "search and destroy mission" against the Dengue Fever carrying mosquito in Gladstone after a positive case in the city.
A local resident, who recently returned from an overseas holiday, has tested positive for an as yet unknown type of dengue......
Paul Florian, director of environmental health services for Central Queensland Public Health Unit, is in Gladstone today working with Gladstone Regional Council staff, conducting door to door inspections and working in "hotspots" to try and reduce numbers of the carrier mosquito.
"Dengue mosquitoes only breed around homes and in urban areas, and not in swamps or creeks," said Mr Florian said.
"They breed in containers that hold water such as buckets, old tyres, tarpaulins and black plastic, pot plant bases, vases, boats, tin cans and plastic containers, roof guttering, rainwater tanks with damaged or missing screens, bird baths, striking containers for plant cuttings, drain sumps, fallen palm fronds and coconut shells."
Mr Florian said the dengue fever carrying mosquito, the Aedes aegypti, was found in some parts of Gladstone, although not in the abundance in Northern Queensland.