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Australia confirms H5N1 bird flu spreading in native bird population

By Thomson Reuters Jul 29, 2026 | 12:44 AM

SYDNEY, July 29 (Reuters) – Australia said on Wednesday the deadly H5N1 bird flu virus ​is being transmitted locally ‌in the native bird population, raising concerns that the disease is beginning to spread more widely after ‌it ​first appeared ⁠in the country in ⁠June.

Minister for Agriculture, Fisheries and Forestry Julie Collins told a news conference that transmission ​had occurred between greater crested terns in South Australia ⁠state.

“While there remains ⁠no evidence of any ​mass mortalities at this point ​in time, we do expect, with ‌this local transmission, that there will be further detections in Australian wildlife,” Collins said.

There ⁠were currently no infections in Australia’s poultry industry, she said.

Four states in Australia ⁠have ‌detected cases of the ⁠strain that has spread ​through ‌wild bird and mammal ​populations ⁠globally since 2021, killing millions, infecting poultry and dairy farms and some farmworkers.

(Reporting by Alasdair Pal in Sydney; Editing by ​Tom Hogue)