Can confirm Listeria is NOT affected by refrigeration in the least. While I don’t subscribe to the notion that a non-young child/ non-immunocompromised person should blanket-avoid raw milk, the threat in things like deli meat and hot dogs too is real.

https://www.fda.gov/food/foodborne-pathogens/listeria-listeriosis#:~:text=Foods%20Linked%20to%20U.S.%20Outbreaks,L.

Want to see how the smart folks in Food Science use viruses to actually combat the Listeria bacterium?

https://www.wired.com/2006/08/fda-oks-viruses-to-treat-food/amp

Now go pour yourselves a nice glass of raw milk!