Bovine-derived H5N1 influenza virus efficiently infects lactating swine via the mammary gland
Min Liu, Natalie N. Chillson, Emma A. Martin, Hannah J. Cochran, Janice Y. Park, Brady M. O’Boyle, Devra D. Huey, Kara N. Corps, Andrew S. Bowman, Cody J. Warren
This study shows bovine-derived H5N1 influenza virus can infect lactating sows via the mammary gland, leading to viral shedding in milk and subclinical infection in piglets without overt disease.
bioRxiv · Jul 18, 2026 · PreprintMicrobiology