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May 8, 2026Infection Genetics and Evolution0 citationsOpen Access

Re-emergence of a highly pathogenic avian influenza H5N1 virus of clade 2.3.4.4b in poultry in France

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FBFrançois-Xavier BriandCMClaire MartenotPMPascale Massin

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Abstract

Two epidemic waves of the same HPAI H5N1 virus, three months apart, were observed in poultry farms in southwestern France in 2022-2023. The high genetic similarity of the viruses observed between the two waves suggests a re-emergence of the virus probably linked to a still-contaminated environment.

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Cite This Study

Briand et al. (2026) studied this question.

synapsesocial.com/papers/6a081cccdf3db87398107b9bhttps://doi.org/10.1016/j.meegid.2026.105958
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