PDF(Pubmed)
Abstract：
Psittacine beak and feather disease virus (PBFDV) and budgerigar fledgling disease virus (BFDV) are significant avian pathogens that threaten both captive and wild birds, particularly parrots, which are common hosts. This study involved sampling and testing of 516 captive birds from households, pet shops, and an animal clinic in Hong Kong for PBFDV and BFDV. The results showed that PBFDV and BFDV were present in 7.17% and 0.58% of the samples, respectively. These rates were lower than those reported in most parts of Asia. Notably, the infection rates of PBFDV in pet shops were significantly higher compared to other sources, while no BFDV-positive samples were found in pet shops. Most of the positive samples came from parrots, but PBFDV was also detected in two non-parrot species, including Swinhoe\'s white-eyes (Zosterops simplex), which had not been reported previously. The ability of PBFDV to infect both psittacine and passerine birds is concerning, especially in densely populated urban areas such as Hong Kong, where captive flocks come into close contact with wildlife. Phylogenetic analysis of the Cap and Rep genes of PBFDV revealed that the strains found in Hong Kong were closely related to those in Europe and other parts of Asia, including mainland China, Thailand, Taiwan, and Saudi Arabia. These findings indicate the presence of both viruses among captive birds in Hong Kong. We recommend implementing regular surveillance for both viruses and adopting measures to prevent contact between captive and wild birds, thereby reducing the transmission of introduced diseases to native species.
摘要：
Psittacine喙和羽毛病病毒（PBFDV）和鹦鹉雏鸟病病毒（BFDV）是威胁圈养和野生鸟类的重要鸟类病原体，尤其是鹦鹉,它们是常见的主机。这项研究涉及对来自家庭的516只圈养鸟类进行采样和测试，宠物店,以及香港一家PBFDV和BFDV的动物诊所。结果表明,PBFDV和BFDV分别存在于7.17%和0.58%的样品中,分别。这些比率低于亚洲大部分地区的报告。值得注意的是,宠物店的PBFDV感染率明显高于其他来源，而在宠物店没有发现BFDV阳性样本。大部分阳性样本来自鹦鹉,但是在两种非鹦鹉中也检测到了PBFDV，包括Swinhoe\的白眼（Zosteropssimplex），以前没有报道过。PBFDV感染鹦鹉汀和雀形目鸟类的能力令人担忧，特别是在香港等人口稠密的城市地区，圈养的羊群与野生动物密切接触。对PBFDV的Cap和Rep基因进行的系统发育分析显示,在香港发现的菌株与欧洲和亚洲其他地区的菌株密切相关,包括中国大陆,泰国,台湾,沙特阿拉伯。这些发现表明香港圈养禽鸟中存在这两种病毒。我们建议对这两种病毒进行定期监测，并采取措施防止圈养和野生鸟类接触，从而减少传入疾病向本地物种的传播。
