Sarker Subir, Moylan Kathy G, Ghorashi Seyed A, Forwood Jade K, Peters Andrew, Raidal Shane R
Faculty of Science, Charles Sturt University, New South Wales 2678, Australia.
Alice Springs Desert Park (K. Moylan), Alice Springs, Northern Territory, 0871, Australia.
Sci Rep. 2015 Sep 28;5:14511. doi: 10.1038/srep14511.
Since the characterization of psittacine beak and feather disease (PBFD) in 1984, a wide range of avian circoviruses have been discovered with varying pathogenic effects amongst a diverse range of avian hosts. Until recently these circovirus species were thought to be restricted to within avian Orders such as the Psittaciformes for beak and feather disease virus (BFDV) and Columbiformes for pigeon circovirus with little evidence of cross-family transmission or replication. We report evidence of a naturally occurring novel host switch event with self-limiting BFDV infection in a group of rainbow bee-eaters (Merops ornatus) a species of Coraciiformes unrelated to parrots and not previously known to be susceptible to any avian circovirus. The outbreak highlights important and unexpected aspects of disease emergence and host-switching pertinent to other situations when viruses might cross species boundaries as well as the potential of avian circoviruses to infect disparate host species.
自1984年鹦鹉喙羽病（PBFD）被鉴定以来，人们发现了多种禽环状病毒，它们在不同种类的禽类宿主中具有不同的致病作用。直到最近，这些环状病毒种类被认为仅限于鸟类目内，例如喙羽病病毒（BFDV）所在的鹦鹉形目和鸽环状病毒所在的鸽形目，几乎没有跨科传播或复制的证据。我们报告了在一群彩虹蜂虎（Merops ornatus）中发生自然发生的新型宿主转换事件以及自限性BFDV感染的证据，彩虹蜂虎是佛法僧目物种，与鹦鹉无关，且此前未知易感染任何禽环状病毒。此次疫情凸显了疾病出现和宿主转换的重要且意想不到的方面，这些方面与病毒可能跨越物种界限的其他情况相关，以及禽环状病毒感染不同宿主物种的潜力。
