ArticleFrontiers in veterinary science2026
Pathogenicity in chickens and ducks of clade 2.3.4.4b H5N6 and H5N3 high pathogenicity avian influenza viruses in South Korea.
Article in Frontiers in veterinary science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
High pathogenicity avian influenza viruses (HPAIVs) of the A/Goose/Guangdong/1/96 lineage continue to diversify through reassortment, generating various H5Nx subtypes. In South Korea, H5N6 HPAIVs were introduced in wild birds and poultry during the 2023-2024 winter season, and the novel reassortant H5N3 HPAIV was first identified in wild birds in late 2024. Herein, we evaluated the pathogenicity and transmissibility of two recently emerged clade 2.3.4.4b H5 HPAIV subtypes-A/duck/Korea/D449/2023(H5N6) [D449(H5N6)] and A/northern pintail/Korea/WF369-1/2024(H5N3) [WF369-1(H5N3)]-in specific pathogen free chickens and commercial ducks. In chickens, the mean death time of the D449(H5N6) and WF369-1(H5N3) groups was 2.6 and 2.2 days, respectively, and the median chicken lethal dose (cLD
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