Henipaviruses are zoonotic, enveloped, negative-sense, single-stranded RNA viruses within the family Paramyxoviridae. Nipah virus (NiV) was first observed in Malaysian and Singaporean pigs in 1998-99 and was initially believed to be an atypical presentation of Japanese encephalitis.
For the purpose of voluntary reporting on non OIE-notifiable disease in wildlife, “Nipah virus” refers to pteropid bat infections. Information on infections of Nipah virus in swine must be submitted through the mandatory reports for the OIE-notifiable diseases.