I find it to be an excellent work, and would recommend it.
It is *not* a "one man trying to find the cure" story. No spoilers, as you learn this in the first chapter of the book: It is more like a documentary. After the zombie apocalypse, the UN sends someone to gather the stories of the events, which are then all told to you in the voice of the people who lived it. Not all these stories are central to winning the war, but all seem, at least to me, to be intensely human stories.
I'd also recommend the audiobook afterwards - since the author is the son of Mel Brooks & Anne Bancroft, he got an all-star cast to read the various chapters in the books: Alan Alda, John Turturro, Mark Hamill, Jurgen Prochnow, Carl & Rob Reiner, Henry Rollins and several others. Unfortunately, the version I have on audiobook is an abridged version. (OK, none of them are A-List stars now, but for an audiobook, they're big)