Arthritis occurs more frequently among adult females and in persons with a particular HLA DR7 phenotype. Control of Case Not applicable. Control of Contacts Unreported or undiagnosed cases should be searched for in the region where the patient had been during the incubation period of their illness. All family members should be questioned about symptoms and evaluate serologically if appropriate. Avoidance of mosquito-prone areas.
Vectors usually bite at dusk and dawn.
Epidemic Measures Conduct a community survey to determine species of vector mosquitoes. Identify their breeding places and promote their elimination. Use mosquito repellents for persons exposed because of occupation or otherwise to mosquito bites. Note See the Victorian Arbovirus Task Force Contingency Plan for Outbreaks of Ross River Virus Disease. International Measures Airport vector control in Australia and Papua New Guinea.