When I started the job in 1992 it was well established as a pathogen, and that was the end of pink burgers for you and for me.
This last capability of the virus appears to be how the pathogen is spreading between farms in different states.
Most human infections are contracted by inhaling, ingesting, or inoculating a pathogen.
pathogen path·o·gen (pāth'ə-jən)
An agent that causes disease, especially a living microorganism such as a bacterium, virus, or fungus.
An agent that causes infection or disease, especially a microorganism, such as a bacterium or protozoan, or a virus. See Note at germ.