Checked federal and Tasmanian statements against Reuters and Antarctic programme background. The official detection notices specify H5 without an N subtype, so this report retains that wording rather than adopting Reuters’ H5N1 headline.
Laboratory results establish the island’s first event
Australia has confirmed H5 bird flu in samples from an elephant seal and a kelp gull on Macquarie Island, the first recorded H5 event on the remote island.
Chief Veterinary Officer Beth Cookson said on October 16 that CSIRO’s Australian Centre for Disease Preparedness had confirmed highly pathogenic avian influenza in the specimens. Tasmania had announced the detection a day earlier, saying the samples were returned with island personnel for testing.
Macquarie Island, in the Southern Ocean between Tasmania and Antarctica, is an important breeding ground for southern elephant seals. Reuters reported the confirmation on October 17, putting renewed attention on the island’s vulnerable wildlife.
The federal statement said the risk to human health remained low, with no evidence of mammal-to-mammal transmission associated with H5 bird flu in Australia. It also reported no detections in poultry or the agricultural production system.
Preparations began before the positive tests
The Australian Antarctic Program had already announced a temporary personnel withdrawal in August ahead of the seal breeding season. The environment department assessed a significant wildlife mortality event as likely and the potential psychological impact on expeditioners as major.
The programme says the withdrawal will slow work on the replacement research station while future operations are assessed. The government maintains its commitment to a long-term presence on the island.
Authorities ask people who encounter sick or dead wildlife to avoid touching or approaching it, record the location and report it. In Australia, the 24-hour Emergency Animal Disease Hotline is 1800 675 888.
Sources
4 references
- Australian Department of Agriculture, Fisheries and ForestryH5 bird flu updates — statement of 16 October 2026Primary federal laboratory-confirmation statement and current risk assessment · 2026-10-16
- Tasmanian GovernmentH5 bird flu detected on Macquarie IslandPrimary state announcement describing the specimens and their return for testing · 2026-10-15
- ReutersAustralia confirms first H5N1 bird flu case on sub-Antarctic Macquarie IslandIndependent reporting; its more specific subtype label is not adopted here · 2026-10-17
- Australian Antarctic ProgramMacquarie Island Station Project — current statusPrimary background on the precautionary withdrawal and anticipated wildlife impacts · Updated 2026-09-02; accessed 2026-10-17
