France ordered that a third dose of a vaccine against bird flu be given to ducks in areas most at risk, citing “new scientific evidence” as it aims to avoid a surge in outbreaks, the farm ministry said on Wednesday. France raised the risk level of bird flu to ‘high’ from ‘moderate’ on Tuesday after new cases of the disease were detected, forcing poultry farms to keep birds indoors. “New scientific evidence has led us to adjust the vaccination protocol to guarantee the best possible protection of animals and avoid any epizootic outbreak,” the ministry said in a statement.

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