The three most dangerous bacteria are Listeria, Tuberculosis and Brucellosis.
Milk is much safer now since pasteurisation and vaccination of cattle, but people are strongly advised NOT to to use unpasteurised milk, including cheeses, and especially not for pregnant women or children.
Some cheese gourmets think the pasteurisation changes the taste of cheeses. They may be right, but is a slight change in taste worth it? I got Brucellosis in 1996, and in 2010, I am still sick.
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