‘Code red’: Warning for ‘debilitating’ mosquito virus in New South Wales

The Ross River virus that causes fatigue, joint pain and rashes has been detected in Sydney mosquitoes after the NSW floods.

The virus was detected on Monday at the popular Narrabeen Lagoon on the Northern Beaches, through a mosquito trap surveillance program that uses honey to collect mosquito saliva.

The Northern Rivers Local Health District said heavy rain and strong winds triggered the “perfect” breeding ground for mosquito-borne viruses.

The virus can be transmitted to humans through a bloodsucking bite.

There are no vaccines against the virus, with symptoms occurring between three and 11 days after being bitten.

In some incidents, recovery can take up to six months.

The warning comes amid Australia detecting cases of deadly Japanese encephalitis, which is also transmitted by mosquitoes.

The deadly virus was detected around the time of last month’s floods.

The virus is spread through the bite of an infected mosquito to people and animals.

In animals, it mostly occurs in pigs and horses.

Clinicians across Australia have been urged to watch out for the virus in people presenting with brain swelling or similar symptoms.

Most human infections cause mild symptoms but someone with severe disease may present with inflammation of the brain, characterised by sudden onset of vomiting, high fever and chills, sensitivity to light and neck stiffness.

Authorities have urged residents to avoid going outside during dawn and dusk when the insects are most active.

Residents are encouraged to wear long-sleeved clothing and wear mosquito repellent as a preventive as flood clean up begins.