These facts indicate that avian influenza, the important poultry disease, bears big threat for the public health.

禽流感这一重大禽类疫病，目前已成为公共卫生面临的最大威胁。

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The main task is to study and implement livestock and poultry disease diagnosis, prevention, quarantine and animal health inspection.

主要任务是研究和实施家畜家禽疾病的诊疗、防治、检疫及畜产品卫生检验等。

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However, not all viruses of the H5 and H7 subtypes are highly pathogenic and not all will cause severe disease in poultry.

然而，并非所有的H5和H7亚型病毒都是高致病性的，也并非所有此类病毒都可在家禽中引起严重疾病。

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Out of 218 confirmed human cases almost all those infected have caught the disease from poultry.

ECONOMIST: Down with the flu | The

In some places, at least, ruthless monitoring of poultry flocks has reduced both the avian disease and the (already rare) cases of people becoming infected.

ECONOMIST: Bird flu and public health

Worse, these animals may also be excreting the lethal virus in their faeces, which could explain how some humans have contracted the disease without any apparent contact with poultry.

ECONOMIST: Animal and human health