The e-coli levels are based on the diet of the animal.
Feedlot animals that are corn-fed have a huge problem with e-coli. Grass-fed cows don't. Which is why grass-fed beef is MUCH healthier. Hell, grass-fed beef contains Omega3s.
So, I'll repeat it again, pasteurization is necessary because of the diet, conditions and because we mass produce dairy products. Not because 'raw' milk, where the cow is raised in natural environments, and given their 'natural' food, is unhealthy.
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