A species of ALPHAVIRUS causing a measles-like acute febrile rash illness. It is closely related to the Chikungunya virus and Igbo Ora viruses.

Synonyms: O'nyong-nyong Virus, Nyong Viruses, O'nyong, Igbo-Ora Viruses, txid2169701, Onyong nyong Virus, Igbo-Ora Virus, Onyong nyong Viruses, O'nyong Nyong Viruses, Virus, Onyong nyong, Viruses, Onyong nyong, Igbo Ora Virus, Viruses, O'nyong-nyong, Virus, Igbo Ora, Viruses, O'nyong Nyong, Virus, O'nyong'nyong, Viruses, O'nyong'nyong, Virus, Igbo-Ora, Virus, O'nyong Nyong, Ora Viruses, Igbo, O'nyong Nyong Virus, O'nyong-nyong Viruses, nyong Virus, Onyong, Ora Virus, Igbo, Viruses, Igbo-Ora, Virus, O'nyong-nyong, Nyong Virus, O'nyong, O'nyong'nyong Viruses, txid79899, Viruses, Igbo Ora, nyong Viruses, Onyong, Igbo Ora Viruses, O'nyong'nyong Virus