Early detection and genetic characterization of clade 2.3.4.4b H5N1 and H5N9 highly pathogenic avian influenza viruses at the onset of fall migration in wild birds during october 2025 in South Korea. - Si YJ; Lee SH; Lee HE; Kim DJ; Jeong H; Lee S; Lee DH (Frontiers in cellular and infection microbiology, 2026)