Australia on Saturday confirmed its first mainland case of the deadly H5 strain of bird flu.
The disease was detected in a migratory sea bird — a brown skua — in a remote part of Western Australia, Agriculture Minister Julie Collins said at a press briefing in Canberra.
The development means that the highly contagious variant of avian influenza is now present on every continent.
"We all knew we couldn't be bird flu-free forever," Collins said.
What do we know?










