USDA experts have traced the spread of the H5N1 virus in Michigan to a herd of dairy cattle imported from Texas, leading to widespread infections among local poultry and cattle.

A poultry farm in the Greater Sydney basin in the Australian state of New South Wales is under quarantine after bird flu was detected in it.

Australian supermarket giant Coles announced that it was limiting the number of eggs that customers could buy after traces of avian influenza were detected in several poultry farms in the state of Victoria.

Mexico clarifies that the first reported human death from H5N2 bird flu was actually caused by a chronic disease, not the virus.

Minnesota has reported its first case of bird flu in dairy cows as the virus spreads across the US. Minnesota has reported its first case of bird flu in dairy cows as the virus spreads across the US.

The US government is reportedly in the final stages of negotiations to fund a late-stage trial of Moderna's mRNA bird flu vaccine amid the outbreak spreading in dairy cows.

Iowa has announced its first bird flu outbreak, discovered at a 4.2 million-chicken commercial egg-laying business in Sioux County.

The US and Europe are considering acquiring or producing H5N1 bird flu vaccines to protect poultry and dairy workers.

Bird flu has been detected at an Australian egg farm, putting it on lockdown amid worries that it is a strain causing catastrophic poultry deaths and the potential source of the next global pandemic.

US health and agriculture authorities commit almost $200 million to address a bird flu outbreak in dairy cows across nine states.