What is the setting in the novel, The Hunt?

The novel is set in a world where there are no longer humans living, but a world that is run by vampires. The specific century or time-frame is never stated. While the novel seems to be in a future century, some old world traits, such as using horses and carriages are still in place. The main characters are involved in the preparation for the Hunt, which is a special group of vampires chosen to hunt down and kill the Hepers that are in captivity.