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27 Jan 2021 | 02:49 PM UTC

Australia: Ross River Virus cases reported in New South Wales during January 2021

Elevated Ross River virus activity reported in New South Wales, Australia, as of January 2021. Take precautions against mosquito bites.

Informational

Event

Australian health authorities have reported elevated Ross River virus activity across New South Wales (NSW), with 47 cases reported Jan. 1-27, 2021, compared to only 13 cases reported over a similar period in 2020. The most affected area is Murrumbidgee Local Health District (17 cases), with additional cases reported in Central Coast, Hunter New England, Northern NSW, Mid North Coast, Southern NSW, Western NSW, and Far West. Authorities continue to emphasize the importance of mosquito bite precautions. This is the most recent information as of Jan. 27.

Context

Ross River virus is endemic to Australia, transmitted through the bites of infected mosquitoes. Disease activity typically peaks January-April. Symptoms appear approximately nine days after infection and can include fever, flu-like symptoms, rash, and severe arthritis. Arthritis can be disabling and primarily involves the ankles, fingers, knees, and wrists; however, any joint may be affected. Fatigue and arthritis may persist for several months to a year, but the disease does not cause any permanent joint damage.

Advice

As weather permits, wear long-sleeved shirts, pants, and socks, or use insect protection containing DEET, picaridin, or another approved repellent. Remove standing water to reduce the number of biting mosquitoes. Seek medical attention if symptoms develop within 10 days of operating in affected areas.