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The paper analyzes the first cases of highly pathogenic avian influenza (HPAI) caused by H5N1 subtype in wild birds in Poland. From mid-February, when the H5N1 virus was found in wild birds on Ruegen Island in Germany, the number of samples received by the National Reference Laboratory (NRL) for HPAI diagnosis in Pu³awy increased significantly. Samples of organs from wild birds (but occasionally from...
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