France raised the risk level of bird flu to 'high' from 'moderate' after the detection of new cases of the disease, the farm ministry said on Tuesday, forcing poultry farms to keep birds indoors to stem the spread of the highly contagious virus. Avian influenza, commonly known as bird flu, has led to the culling of hundreds of millions birds worldwide in recent years. France had said last week that it had detected a first bird flu outbreak on a farm this season in Brittany, in the northwest of the country.
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