title: O'nyong-nyong (ONN) fever.
mesh_terms: D000524:Alphavirus / Q000302:isolation & purification*; D018354:Alphavirus Infections / Q000453:epidemiology* / Q000821:virology; D003906:Developing Countries; D005334:Fever / Q000453:epidemiology / Q000821:virology; D006801:Humans; D015994:Incidence; D012307:Risk Factors; D014454:Uganda / Q000453:epidemiology