致命H5N1禽流感病毒首次现身维多利亚州

致命的H5N1禽流感病毒首次在澳大利亚维多利亚州被检测到1。在波特兰附近发现的一只冠鸬鹚身上呈现阳性反应1。维多利亚州已启动《州紧急动物疾病应对计划》，并进行遗传学检测以正式确认检测结果1。

这一病毒株自6月在西澳珀斯南方约700公里的勒格朗国家公园首次发现以来，通过候鸟沿南部海岸迅速传播1。维多利亚州已成为确认感染该病毒的第五个州，此前西澳、南澳、新南威尔士州和昆士兰州已确认多例感染1。据州农业部门官员Dr Graeme Cooke称，"该H5变种不同于以前的病毒株，已知会导致大量野生鸟类和某些哺乳动物死亡"1。此外，南澳首次发现了冠鸬鹚之间的本地传播现象1。

Australia's Victoria state has confirmed its first case of the highly pathogenic H5N1 bird flu virus, detected in a cormorant found near Portland 1. The discovery marks a significant expansion of the outbreak that has already spread across multiple Australian states since its initial detection in June 1.

The infected bird tested positive for the virus, prompting Victorian authorities to activate the State Emergency Animal Disease Response Plan and initiate genetic testing to formally verify the result 1. Dr Graeme Cooke noted that "this H5 variant differs from previously circulating strains and is known to cause significant mortality in wild birds and certain mammal species" 1. The outbreak has now been confirmed in Western Australia, South Australia, New South Wales, Queensland, and Victoria 1.

The virus was first identified in Australia in June near Perth in Western Australia, where it was detected in a brown skua approximately 700 kilometers south of the city 1. Since then, the pathogen has spread rapidly along the southern coast through migratory bird populations 1, with local transmission among cormorants recently documented in South Australia for the first time 1.