Influenza

Australia, New Zealand brace for looming bird flu threat

Dozens of captive tigers and lions die in Vietnam, bird flu detected

Pope Francis, back from flu, calls airstrikes on Lebanon 'unacceptable'

Poland reports outbreak of bird flu on poultry farm, WOAH says

US, Colorado probe additional H5N1 bird flu cases in poultry farm

Factbox-Bird flu strains spread around the globe

Bird flu spreads to seventh Australian poultry farm

Bird flu hits Australian duck farm

US, European nations consider vaccinating workers exposed to bird flu

China lifts risk alert warning on bird flu in Serbia

Dairy worker bird flu case shows need for protective gear, US CDC study shows

CDC issues health alert for bird flu infection in US

Scientists investigate thousands of dead Antarctic penguins for bird flu