Not true. The bacteria causing tuberculosis, listeriosis, and brucellosis are all there because the cow was sick. There are plenty of other pathogens that cows can be infected with that end up in the milk. Of course, unsanitary conditions during the milking process can introduce other bacteria into the milk, as well. Cows also get rabies... guess what happens to people who drink rabid cow milk.
Morbidity and Mortality Weekly Report (MMWR. 1999;48:228-229), Mass Treatment of Humans Who Drank Unpasteurized Milk From Rabid Cows Massachusetts, 1996-1998
The above article says that the CDC (between 1990 and 1999) receives about 150 rabid cow reports per year.
Personally, I'll stick with the pasteurized stuff. It's not heated hot enough to even cook it; it's heated briefly to about 70 C, just hot enough to kill the pathogens (and not even other bacteria). If people want to drink raw milk, they should be able to--as long as it's labeled adequately.
Thanks for posting that info. I grew up drinking raw milk from our own cow. Cows with TB and other diseases pass it through their milk, it isn’t only dirty conditions and cow poo that is the culprit. Apparently dad had Suzie tested for diseases because we survived years of drinking raw milk.