This isn't a bad book, but it's not great either. It is written pretty well, but appears a bit dated now and doesn't offer anything new or original. The book is written by a pair of real life experts in the subject matter, and that seems to be true from the details of the virus that are discussed.
The book centres around a young but brilliant doctor who is working his way up the career ladder to become an expert bacteriologist. He is called in by his mentor, who is a world expert in the field, to find a way to stop a new highly lethal virus that has sprung up in the US. A small team of doctors and military personnel attempt to do just that, while overcoming various obstacles that arise along the way. This is more of a thriller than an apocolyptic fiction story as it focuses on the initial outbreak of disease that could potentially kill everyone on the planet. It's a fairly short book that manages to keep up the interest level and momentum throughout the story.