By Farouq Suleiman LONDON (Reuters) – Bird flu has been detected for the first time in mammals in sub-Antarctica, Britain’s Animal and Plant Health Agency (APHA) said on Thursday, raising concerns the virus could spread and threaten large populations of wildlife in the region. The APHA said highly pathogenic avian influenza (HPAI) was found in elephant and fur seals on the island of South Georgia, a UK overseas territory situated in the Southern Atlantic Ocean. It had been testing for bird flu in mammals in the region since it was first suspected last year. “Given Antarctica is such a unique a…