Usutu virus continues to spread across Europe: first report on multiple molecular detections of USUV Africa 2 and Africa 3 lineages in free-living and captive birds in Poland, July-November 2023
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The growing importance of the Usutu virus (USUV) as an emerging zoonotic viral pathogen prompted Poland to investigate the epidemiological status of USUV infections among native bird species. Consequently, thirty-four avian individuals (n = 34) from different geographical parts of the country were confirmed to be USUV-positive in the RT-PCR between July and November 2023. The phylogenetic analysis indicates the first-ever recorded occurrence of the USUV Africa 2 and Africa 3 genetic lineages in Poland.
