I can't recommend anything specific to microbiology. I suggest a subscription to Scientific American. They have a book review section, as well as great articles. Science writers I like are:
Oliver Sacks (neuroscience)
Atul Gawande (medicine)
Edmund O. Wilson (biology)
"The Emperor of All Maladies" is a great book about the history of cancer therapies.
"The Immortal Life of Henrietta Lacks" is a best seller about medical research.
An interesting work of fiction is "Flowers for Algernon", about a man who participates in an experiment and is transformed from a mentally retarded young man to a genius. Very sad!!!
