Buy from Amazon
Biography of a germ
Karlen tells us about the place of Bb in the classification and evolution of living things, of the development of the germ theory of disease and the reasons why this disease was first seen in Lyme (and what the inhabitants thought about having a disease named after their town).
I have to say though that I felt that the book didn't go into as much detail about Bb itself as I'd expected - maybe more bacteriology would have made the book seem too technical. I feel that it is more of the story of Lyme disease rather than of the organism that causes it.