Some 240,000 birds will be destroyed on a NSW egg farm to tackle the spread of bird flu in two states.

Hundreds of thousands of birds have been killed on a poultry egg farm after authorities detected bird flu on the property.

Authorities are urgently confirming whether a large-scale bird flu outbreak in one state has spread across the border.

Bird flu (H5N1) virus was found in dairy cows in the US. Raw milk from infected cows contains high virus levels.

The highly contagious and deadly strain of avian flu was detected near the first site, with authorities now required to euthanise an estimated 87,000...

Cows at the US dairy farms have tested positive for the bird flu (H5N1) virus in recent months, report public health experts. The influenza A (H5N1)

Three farms are under lockdown and thousands of poultry have died after the bird flu was detected in Sydney.

Three farms are under lockdown and thousands of poultry have died after the bird flu was detected in Sydney.

The highly contagious and deadly H7N8 strain of bird flu has been detected at a second farm in the Hawkesbury region, NSW's health minister says.

Scientists say that findings from a small experiment lend hope the outbreak among dairy cattle can potentially be contained.