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Since early 2020, while the worldwide focus was on the COVID-19 pandemic, highly pathogenic avian influenza (HPAI) A(H5) viruses of clade 2.3.4.4b caused the worst ever observed epidemics in birds… Click to show full abstract
Since early 2020, while the worldwide focus was on the COVID-19 pandemic, highly pathogenic avian influenza (HPAI) A(H5) viruses of clade 2.3.4.4b caused the worst ever observed epidemics in birds during the 2020/21, 2021/22 and ongoing 2022/23 epidemic years in Europe. They caused 14,325 reported outbreaks with devastating consequences for farmed poultry, resulting in the culling of roughly 96 million farmed birds in Europe. Some remarkable changes of epidemiology have been observed over the last years in relation to circulating HPAI viruses of the H5 subtype.
Journal Title: Eurosurveillance
Year Published: 2023
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