Avian influenza (AI) is a serious disease of poultry throughout the world.

禽流感是目前影响世界养禽业的最严重的疫病。

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Highly pathogenic avian influenza (HPAI) is a highly contagious disease of poultry caused by influenza a viruses.

高致病性禽流感(HPAI)是由正粘病毒科a型流感病毒引起的一类禽类病毒性传染病。

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Infectious bronchitis virus (IBV) is a world-wide viral disease of poultry, which poses a major economic threat to the poultry industry.

禽传染性支气管炎(IB)呈世界广泛流行，是危害养鸡生产最严重的病毒性传染病之一。

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H5 virus which is responsible for avian flu, a disease that has forced a mass slaughter of poultry in many countries and could, if it mutates, cause a deadly epidemic among humans.

ECONOMIST: The World Health Organisation

Identifying human cases and isolating them quickly is important because the shortest route to a version of the disease that is dangerous to the whole of humanity rather than just vets and poultry farmers is simultaneous infection with both bird influenza and the human variety, and the exchange of genes between the two.

ECONOMIST: Bird flu and public health

The countries represented at the summit pledged a co-ordinated fight against the disease and issued a declaration that mass culling of infected poultry flocks was the best way to control its spread.

ECONOMIST: Averting a global plague | The