Viral polyarthritis.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D001170:Arthritis, Infectious / Q000209:etiology*; D001315:Australia; D002648:Child; D003465:Culex / Q000382:microbiology; D006801:Humans; D008875:Middle Aged; D012398:Ross River virus / Q000302:isolation & purification; D014036:Togaviridae Infections / Q000635:transmission*