How a tiny H5N1 dose triggers massive virus shedding in cow milk

https://www.news-medical.net/news/20260525/How-a-tiny-H5N1-dose-triggers-massive-virus-shedding-in-cow-milk.aspx New cow infection experiments reveal a striking paradox: H5N1 needs only a tiny dose to overwhelm mammary tissue and flood milk with virus, yet it failed to spread through contaminated milking equipment in the lab.