The Stand by Stephen King

The Stand is a post-apocalyptic horror/fantasy novel by Stehen King.
The Stand demonstrates the scenario in his earlier short story, Night Surf. The novel The Stand was originally published in 1978 and was later re-released in 1990 as The Stand: The Complete & Uncut Edition; The Stand restored some text originally cut for brevity, added and revised sections, changed the setting of the story from 1980 (which in turn was changed to 1985 for the original paperback release in 1980) to 1990, and updated a few pop culture references accordingly.
The Stand was nominated for the World Fantasy Award for Best Novel in 1979, and was adapted into both a television miniseries for ABC and a graphic novel published by Marvel Comics. The Stand book is dedicated to Stephen King's wife, Tabitha: "For my wife Tabitha: This dark chest of wonders."
Stephen King's The Stand is a thrilling novel that portrays the forces of good against evil. In the year 1991, a plague strikes America, leaving only a few thousand people alive who are "immune" to the epidemic. Of the survivors, those who serve G-d instinctively join in Boulder, Colorado, while those who worship the "Dark Man" are drawn to Las Vegas, Nevada. The two groups separately re-build society, until one must destroy the other. Franni Goldsmith comes very close to killing herself. She thinks she can not deal with her parents' deaths, being unwed and pregnant... (Summary by Wikipedia)