The cow udder as an influenza mixing ground.

Bovine mammary tissue can support infection and replication of diverse influenza A viruses, potentially facilitating viral co-infection.

• Why it matters: Understanding the role of bovine tissues in influenza virus dynamics is important because it may reveal new sites for viral mixing and reassortment, which can impact virus evolution and zoonotic risk.
• What they did: The study examined bovine mammary tissue's ability to support infection and replication of various influenza A virus strains, highlighting its potential as a mixing ground for different viral strains.
• The result: Findings suggest that bovine mammary tissue may provide an environment for co-infection of multiple influenza A strains, which could influence viral reassortment and emergence of new variants.