Ross River virus detected in mosquitoes at Thomsons Lake

Ross River virus (RRV) has been detected in mosquitoes at Thomsons Lake Nature Reserve in Beeliar prompting the City of Cockburn to issue a warning for residents to protect themselves against mosquito bites over coming months.
The virus was detected by the Department of Health in samples collected by the City’s Environmental Health team in June as part of its regular mosquito monitoring program.
While the multiple detections are the first in the City for 2021, the timing is unusual, as mosquito and mosquito-borne virus activity is often reduced in the winter months.
City of Cockburn Acting Environmental Health Manager Patricia Orr said the unseasonal virus activity was likely the result of high levels of rainfall, coupled with above average temperatures which created conditions that favoured mosquito breeding.
“The only way to prevent being infected with a mosquito-borne disease like Ross River virus is to avoid being bitten in the first place, because there is currently no vaccine or specific treatment for RRV,” Ms Orr said.
“People may not be thinking about protecting themselves from mosquitoes during our winter months but this is a timely reminder that we still need to be actively preventing mosquito bites.
“Mosquito management is being undertaken by the City in areas with a recognised risk of RRV activity, but it is not realistic to rely on mosquito management programs alone to control all mosquitoes.
“People living in or travelling in the City need to take their own precautions to avoid mosquito bites.”

Symptoms of RRV can last for weeks to months, and include painful or swollen joints, sore muscles, skin rash, fever, fatigue and headaches.
The only way to diagnose the disease is by visiting your doctor and having a specific blood test.
Prevent mosquito bites with the following precautions:
·         Avoid outdoor exposure, particularly at dawn and early evening when mosquitoes are more likely to bite
·         Cover up with long, loose-fitting, light-coloured clothing when outdoors
·         Repel by applying an effective personal repellent containing diethyltoluamide (DEET) or picaridin evenly to all areas of exposed skin and always follow the label instructions
·         Remove water holding containers from around the home and garden to ensure mosquitoes do not breed in your own backyard, and
·         Screen all household doors and windows, ensuring these screens are in good condition.
For more information about mosquito prevention visit the City’s website.

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City of Cockburn
Whadjuk Boodja
9 Coleville Crescent,
Spearwood 6163

PO Box 1215, Bibra Lake DC,
Western Australia, 6965

Office opening hours:
8.30am to 4.30pm
Monday to Friday (excluding public holidays)

Language Support

Cockburn Nyungar moort Beeliar boodja-k kaadadjiny. Koora, yeyi, benang baalap nidja boodja-k kaaradjiny.
Ngalak kaadatj dayin boodja, kep wer malayin. Ngalak kaadatj koora koora wer yeyi ngalang birdiya.

City of Cockburn acknowledges the Nyungar people of Beeliar boodja. Long ago, now and in the future they care for country.
We acknowledge a continuing connection to land, waters and culture and pay our respects to the Elders, past, present and emerging.