City of Greater Geelong to target mosquito breeding sites as Ross River virus numbers climb

With dozens of cases of the debilitating Ross River Virus diagnosed so far this year in the region, City of Greater Geelong is tackling a surge in mosquito breeding sites.

THE City of Greater Geelong is tackling a surge in mosquito breeding sites as cases of a disease carried by the insect climb.

More than 45 cases of Ross River virus have been recorded in Greater Geelong so far this year, Department of Health and Human Services data shows.

And more than 40 cases of have been recorded for the Surf Coast since January 1.

The DHHS has confirmed the virus has been detected in mosquitoes in Anglesea.

Ross River virus can cause joint swelling and pain, fatigue and muscle aches that can persist for many months.

City of Greater Geelong Director Planning, Design and Development Gareth Smith said the City worked with the DHHS to deliver a comprehensive mosquito monitoring and treatment program.

Ross River virus infection is spread by mosquitoes

Mr Smith said increased rain and milder weather has resulted in more breeding sites this season compared to a typical summer.

“This means there are more areas to monitor and treat, and we continue to do this as part of our program,” he said.

Mr Smith said council’s proactive program targets large wetlands and other breeding areas, with treatment aimed at reducing levels of mosquito larvae.

“The 2020-21 treatment program commenced in August and will run until late March 2021,” he said.

“Treatment methods consists of either manual application or aerial application of a dry pellet product that is targeted to reduce levels of mosquito larvae and limits the number of adult mosquitoes that emerge.”

Surf Coast Shire general manager environment and development Ransce Salan said a DHHS warning about the virus, that was re-issued this month, followed DHHS receiving results of the council’s Anglesea mosquito monitoring program.

The program found Ross River virus present at one of the five sites council sampled along the Anglesea River.

“After our recent treatments, mosquito larvae numbers are now quite low and do not warrant

further treatments at this time,” Mr Salan said.

“We will continue our regular monitoring and sampling program while the Ross River virus risk is significant and further treatments will be undertaken if required based on results and DHHS advice.”

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Originally published as City of Greater Geelong to target mosquito breeding sites as Ross River virus numbers climb