On April 4, the Associated Press did a story on unpasteurized milk.
From the article:

Unpasteurized milk can be breeding grounds for food poisoning bacteria such as campylobacter, E. coli and salmonella, as well as forms of tuberculosis that can be transmitted from cattle to people.
Fairbairn said her family has not gotten sick. Also, some experts say raw milk is not uniformly dangerous. Sanitary handling from farm to delivery can keep the risk of bacteria down, said Rusty Bishop, director of the Center for Dairy Research at the University of Wisconsin-Madison.
“It’s amazing how clean milk is when you look at where it comes from,” Bishop said. “If God had done it right, he would have put the teats at the other end of the cow.”
Bishop does not drink raw milk.

Neither does Bill Marler.