Virus has already caused catastrophic losses in seals in South America and sub-Antarctica, particularly among pupsFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastScientists have warned deadly H5 bird flu could cause “carnage” for Australia’s seal and sea lion populations after detection of the virus in long-nosed fur seals in South Australia.SA confirmed Australia’s first case in a mainland mammal on Saturday after a dead l