Outbreak is a 1995 American medical disaster film directed by Wolfgang Petersen and based on Richard Preston's nonfiction book The Hot Zone. It stars Dustin Hoffman, Rene Russo and Morgan Freeman, and co-stars Cuba Gooding Jr., Kevin Spacey, Donald Sutherland and Patrick Dempsey.
Based on the above text, what's the best answer to this question: is the movie outbreak based on a true story?
yes