The H5N1 avian influenza virus has been detected on a duck farm in the German state of Brandenburg.

The flock demonstrated no clinical signs of the infection. However, on-farm monitoring detected the presence of antibodies and the results were passed to local and national authorities. The farm has been sealed off and its stock will be destroyed.

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Investigations are ongoing as the how the ducks became infected. The last time that the state of Brandenburg recorded the presence of H5N1 was in 2007.