This is a great book by a *very* good author. It's about a rabies outbreak in New England. A new strain of rabies virus is discovered that can be transmitted directly from person to person (not just from animals to people). Some animal rights activists "rescue" some infected animals from a lab, releasing the virus into the wild.
I can't give a more detailed description of the plot without flipping through the book to refresh my memory. I don't want to do that. I'm looking forward to re-reading the book cover-to-cover because the book is so good and more than ten years have passed since I read it.
Read this book -- especially if you're a fan of Dean Koontz, Stephen King, or Michael Crichton.
It will probably appeal to fans of the movie "28 Days Later".
I also recommend "Limerock", "Dream House", "Nightflyer", and "Eternal Bliss". ("Nightflyer" is the best of the group.)