H5N1 Bird Flu: Could This Strain Spark the Next Pandemic?
H5N1 bird flu is spreading globally among birds and mammals. Experts warn of a human spillover risk but say a vaccine offers defense.
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H5N1 Bird Flu Spreads Among Antarctica’s Penguin Populations
Antarctic scientists warn that H5N1 bird flu has spread to penguins and cormorants, threatening the survival of key bird species on the continent.