High H5N1 influenza levels found in mice given raw milk from infected dairy cows Mice administered raw milk samples from dairy cows infected with H5N1 influenza experienced high virus levels in their respiratory organs and lower virus levels in other vital organs.

https://www.nih.gov/news-events/news-releases/high-h5n1-influenza-levels-found-mice-given-raw-milk-infected-dairy-cows