I've just finished reading The Wisdom of Whores by Elizabeth Pisani and it is a wonderful book. Ok, a wonderful book especially if you find yourself compulsively turning the pages of popular science books more than novel, but still - a book written by a real expert who also happens to have been a journalist before becoming an epidemiologist, and can write vividly, entertainingly and with passion about fairly obscure statistical points. Most of all, I loved the sense of fun, and genuine liking for people, that came across from the book: despite the fact that it deals with a disease that has killed millions and will kill more, it's a book that celebrates the lives of the people it destroys, gay guys, whores and junkies to use Pisani's definition: not with a funeral but with endless descriptions of wit, spirit, dinner parties and shared meals, cigarettes and drinks.
It makes quite a number of vibrant points, that boil down to "to stop HIV spread you need to do nice things for whores, junkies, and gay guys, and lots of people don't want to." And there are wonderful anecdotes, like the erotic Chinese classic novel she appropriated for a lesson in relationship networks and reality check for a Chinese apparatchnik, or how she rescued a night's worth of samples from a couple of Indonesian policemen...
I'll just say, go out and buy this book, it will entertain you and outrage you and leave you with a faint sense of hope in the human race.