Scientists have detected the H5 strain of bird flu in Australia for the first time, meaning the highly contagious variant has now spread to every continent. Australian Agriculture Minister Julie Collins told a press conference on Saturday that the disease had been found in a migratory sea bird, a brown skua, in remote Western Australia, and the result was confirmed by the national science agency. Samples from another sick bird, a giant petrel, had also shown as a suspected positive result, she...