I read this book at school and it scared the living daylights out of me. I had dreams about it for years and, some 20 years on, I could tell youevery detail of the plot. It also started me on a bizarre fixation with"end of the world" novels, films and TV series.
Part of what makes it so chilling is the hero's response when a plaguewipes out seemingly everyone in the world except himself. He never cries,panics or really reacts. This is because he is already in a sort of stateof shock, because shortly before it all, his family died suddenly in anaccident. He's numb, even when a child he takes care of during the plagueturns out not to be immune, rapidly ages to seem like it has the face ofan old person (a symptom of the plague) and dies in front of him.
There are other really shocking incidents in the book, though nothinggraphic. The ending is incredibly ambiguous. I don't know if I can say Ienjoyed it, but it must have had something to keep me remembering it soclearly all these years.