Poultry farmers are being warned it is inevitable the bird flu outbreak will impact the industry. (Dan Peled/AAP PHOTOS)Poultry farmers are being warned it is inevitable the bird flu outbreak will impact the industry. "Chickens in general are very susceptible to highly pathogenic bird flu viruses," he told a CSIRO briefing on Wednesday. There have been no confirmed H5 cases in the Australian poultry industry. The national bird flu tally blew out to 285 with another 49 cases confirmed on Wednesday.