“…Viruses of the subfamily Avulavirinae , previously designated avian avulaviruses (AAvV), are enveloped, non-segmented negative-sense single stranded RNA viruses, which are in the range of 14.9 to 17.4 kb in length, encode up to nine different proteins [3] and have the capacity to cause diseases with varying clinical manifestations in more than 200 wild and domestic bird species [4]. There are currently three genera ( Metaavulavirus , Orthoavulavirus and Paraavulavirus ) within Avulavirinae , including 20 described serotypes (-1 to -20), based on haemagglutination inhibition (HI) and neuraminidase inhibition (NI) assays and genetic sequencing [5,6,7,8,9,10]. In detail, Metaavulavirus contains ten species of avian metaavulavirus (AMAV), including serotypes -2, -5, -6, -7, -8, -10, -11, -14, -15 and -20, Orthoavulavirus contains eight species of avian orthoavulavirus (AOAV), including serotypes -1, -9, -12, -13, -16, -17, -18 and -19, while only two serotypes (-3 and -4) of avian paraavulavirus (APAV) are grouped into the genus of Paraavulavirus [11].…”