The deadly N1H5 strain of avian flu is spreading in Antarctica, threatening penguin and cormorant populations.
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00:00 Avian flu is spreading in Antarctica, hitting threatened bird species living there.
00:05 The H1N5 strain of the virus was first confirmed in Antarctica last month.
00:10 It has since been spotted in both penguins and cormorants.
00:14 Penguin colonies stick close together.
00:15 Scientists fear this may increase the risk of transmission.
00:19 They believe the virus came to Antarctica through birds migrating from the northern
00:23 hemisphere.