Australia issued a warning on Monday regarding the potential spread of H5N1 bird flu following a significant mortality event among seabirds that resulted in the death of approximately 50 greater crested terns near the coast south of Adelaide.
Although there have been no reported cases of the virus on Australian farms, many have implemented lockdown measures to protect poultry flocks since the initial detection in June. Agriculture Minister Julie Collins confirmed the presence of H5N1 bird flu in a group of 49 deceased and 35 sick terns discovered through helicopter surveillance near Cape Jaffa, 250 kilometers from Adelaide, on Friday.
Collins emphasized that Australians should anticipate a broader impact and increased numbers of wildlife being affected. She highlighted that this incident marked the first confirmed instance of mass mortality due to the virus, warning that significant losses were inevitable once H5 bird flu started spreading in wildlife and the natural environment.
The total count of confirmed cases in Australia stands at 74, spanning across states such as Western Australia and Queensland, with a concentration in South Australia. Both Australia and New Zealand, which reported its first H5N1 case the previous month, have proactively prepared for the virus over the years by reinforcing biosecurity measures at farms, conducting testing on shorebirds, vaccinating susceptible species, and strategizing response plans.
The widespread impact of the virus has led to the deaths of numerous birds and mammals in recent years, resulting in substantial financial losses for poultry farmers, infecting cattle in the United States, and leaving beaches strewn with the bodies of birds and seals.
While H5N1 bird flu can transmit to humans through contact with infected animals, the global incidence among humans remains low, and officials assess the risk to humans as minimal.