This is the first book by Ms. Yarbro that I have read that was not on St. Germain the vampire. BUT, Taji's Syndrome was excellent! It is one of the best medical thrillers I have read in a long time. It was so good I wrote to Ms. Yarbro to ask if any of her other books were medical thrillers like this one. The suspense was awesome waiting to see who would get the disease next and waiting to see if they would ever find out where the disease came from. It really shook me up as to how the disease got started and made me wonder! I don't want to give away the answers but if you haven't read this yet, it is a MUST! It is an edge of the seat kind of book and one that will make you think twice. It was great!