Australia issued a warning on Monday regarding the potential spread of H5N1 bird flu after a significant number of greater crested terns were found dead off the coast south of Adelaide. Approximately 50 of these seabirds were affected by the virus.
Although there have been no reported cases of the virus on Australian farms, precautions have been taken with many farms implementing lockdown measures to protect their poultry since the initial detection of H5N1 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 aerial surveillance near Cape Jaffa, located 250 kilometers from Adelaide, on Friday.
Collins informed reporters in Canberra that the public should anticipate a wider impact on wildlife with larger numbers of animals being affected. This incident marks the first known mass mortality event due to the H5 bird flu, indicating an escalation in the spread of the virus in the natural environment.
Australia has recorded a total of 74 confirmed cases spread across various states, predominantly in South Australia. The country, along with New Zealand, has been preparing for the virus for years, implementing measures such as enhanced biosecurity on farms, monitoring shorebirds, vaccinating susceptible species, and devising response strategies.
The H5N1 virus has caused substantial losses in the bird and mammal populations, resulting in significant financial setbacks for poultry farmers globally. It has also affected cattle in the United States and led to the mass mortality of birds and seals on beaches.
While H5N1 bird flu can be transmitted to humans through contact with infected animals, the number of human cases remains minimal, and health officials assert that the risk to humans is low.