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The aim of the paper is to describe outbreaks of highly pathogenic avian influenza (HPAI) caused by H5N1 subtype in December 2007 in Poland. Between 1st-22nd of December, the H5N1 virus was detected in 9 poultry holdings (2 meat turkey holdings, 3 commercial layer farms and 4 free-ranging flocks) and in wild birds kept in captivity (2 buzzards and 1 white stork in an avian asylum). Laboratory diagnostic...
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