Ross River Virus (RRV) cases in South Australia significantly increased in 2025, with 106 reported cases compared to 25 in 2024. The virus, transmitted by mosquitoes from infected animals to humans, is found throughout Australia. There is currently no specific antiviral treatment or vaccine available to prevent infection.
Bec Powditch, a resident, contracted RRV following mosquito bites during the Australia Day long weekend. She developed a red rash, followed by severe joint pain in her wrists, knees, and feet. After researching her symptoms, Ms. Powditch requested testing, which confirmed acute Ross River Virus two weeks later. She reported that initial medical advice focused on general pain relief, and despite a notification, she did not receive a follow-up call from her general practitioner. Ms. Powditch later received steroid treatment for five months and continues to experience pain one year after contracting the virus.
Chris Lease, SA Health's acting chief public health officer, stated that while RRV cases are often concentrated around the Riverland region, detections have occurred across South Australia, including the northern Adelaide Plains. He indicated that increased rainfall and warmer weather in 2023 contributed to a rise in mosquito populations, which influenced the case numbers in 2025 and 2026. SA Health has launched an awareness campaign called "Mozzies Suck," recommending that individuals cover up, wear loose and long clothing, use mosquito repellent, and monitor their local environment.
Professor Craig Williams, a public environmental health expert at Adelaide University, noted that the focus on newer, more deadly mosquito-borne diseases like Japanese Encephalitis and Murray Valley Encephalitis has sometimes diverted attention from RRV. He expressed optimism that the Australian Centre for Disease Control, established in 2024, will improve national surveillance and unified approaches to infectious diseases. Ms. Powditch advocates for increased community awareness and empathy regarding RRV.