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Can H5N1 avian influenza in dairy cattle be contained in the US? (opens in a new tab)
Pekar JE, Crespo-Bellido A, Lemey P, Bowman AS, Peacock TP, Ochoa JN, Rambaut A, Pybus OG, Worobey M, Nelson MI
Cell 2026 189(3):699-705
DOI 10.1016/j.cell.2025.12.033 (opens in a new tab) PubMed ID 41579863 (opens in a new tab)
Abstract
The emergence and sustained spread of H5N1 in US dairy cattle since 2024 have demonstrated that highly pathogenic avian influenza (HPAI) is capable of establishing long-term transmission in livestock. Genomic surveillance has clarified national patterns of spatial diffusion, interspecies transmission, and viral evolution, but critical data gaps remain that impede efforts to track virus movements in real time, identify modes of transmission, and inform control efforts.