Fire Will Fall

Apparantly this is the second book in a series by Carol Plum-Ucci about 4 teenagers who have been poisoned by bio-terrorists after 911.
I did not read the first book and I am not sure if I will.  But I did like this book.  It deals with  4 teenager's problems with their illness caused by the virus as well as their personal issues and two other teenagers who are v-spies trying to uncover the terrorists.
I think the book is well-written, but it is long and took me longer to read than most because it just is not one of those books that you can't put down.
I could and did put it down - and so it took about a week or week and a half for me to read it.